TAIYO Electric Steering Gear Alarm Panel AE3960 – No.1 / No.2 Marine Hydraulic Steering Pump Monitoring & Control Panel

The TAIYO Electric Steering Gear Alarm Panel, identified by the manufacturer's reference AE3960, is a marine electrical monitoring and control panel designed for a two-pump steering gear arrangement.

Manufactured under the TAIYO ELECTRIC CO., LTD. name, the photographed unit is marked MAR-2005 and features dedicated status lamps, fault indications, START and STOP controls, audible alarm equipment and panel testing functions.

Its front face is identified as STEER GEAR ALARM PANEL, with separate indication columns for NO.1 and NO.2 steering gear units.

The panel is relevant to vessels fitted with compatible TAIYO electrical control systems, where bridge personnel need to monitor the operation of steering gear power units and receive warnings of selected electrical or hydraulic faults.

For shipowners, marine electrical engineers, technical superintendents and spare-parts purchasing teams, the correct replacement panel must match the original wiring, control functions, alarm logic and installation requirements.

SM MARINE SERVICE™ supports international enquiries for original TAIYO marine electrical control equipment, replacement steering gear alarm panels and related automation spare parts through www.smmarineservice.com.

Product Information & Identification

Identification note: The photograph shows AE3960 in the nameplate field marked “NO”, not in the field marked “TYPE”. AE3960 is therefore a useful identification and purchasing reference, but it should not be represented as a confirmed manufacturer model number.

The original manufacturer's type field is blank.

What Is the TAIYO Steering Gear Alarm Panel?

A marine steering gear alarm panel is an operator interface used to monitor selected operating conditions of a vessel's steering gear power units.

On ships with two steering gear hydraulic power units, the panel can provide separate indications for each pump or motor assembly.

Depending on the installed electrical control design, the panel may also allow the operator to issue remote start and stop commands to the associated steering gear motor starters.

The photographed TAIYO unit provides two parallel sets of status indications and control positions.

Its arrangement makes it particularly relevant to conventional ship steering gear systems in which each hydraulic power unit has an associated electric motor and starter assembly.

The panel is not itself the hydraulic steering gear actuator, hydraulic pump or main motor starter. It is the visible monitoring and operator-control interface connected to the larger steering gear electrical system.

Main Features & Functions

Dual Steering Gear Unit Monitoring

The front panel is divided into two columns:

• NO.1 – Steering gear unit or pump No.1

• NO.2 – Steering gear unit or pump No.2

Each column includes a green RUN indication and several red fault or status indications.

This allows personnel to distinguish the operating condition of each monitored unit.

RUN Indication

A green lamp marked RUN is provided for each steering gear unit.

The intended function is to indicate operation of the associated pump or motor, according to the system's feedback wiring.

The presence of the lamp does not independently prove hydraulic pressure or steering performance; those conditions require the relevant system instrumentation.

NO VOLT Alarm

The NO VOLT indication identifies a loss-of-voltage or supply-related condition in the associated electrical control system.

The exact sensing point and operating logic depend on the original wiring arrangement.

OVER LOAD Alarm

The OVER LOAD indication is associated with an overload condition of the corresponding steering gear electrical drive or motor protection arrangement.

It may be activated by a motor overload relay or another protection device, depending on the installed circuit.

PHASE FAIL Alarm

The PHASE FAIL indication identifies a phase-related supply fault.

Phase failure can prevent correct operation of a three-phase motor and may create an unsafe operating condition if the system is not adequately protected.

L.O TK LOW Alarm

The L.O TK LOW marking indicates a low-level condition associated with the relevant oil tank.

In the steering gear context, this is typically related to the hydraulic oil reservoir or a designated lubrication-oil tank, depending on the actual equipment design.

The exact tank designation should be checked against the vessel's steering gear drawings.

ST-BY START Indication

The ST-BY START indication is associated with the standby-start function or its status.

In systems configured for automatic standby pump starting, this indication may relate to a standby power unit being started under defined conditions.

However, the lamp alone does not prove that this particular panel independently performs automatic standby-start logic.

Remote START and STOP Controls

Separate START and STOP controls are visible for the two units.

The actual starting and stopping sequences are implemented through the connected starter and control circuits.

Alarm Buzzer and Silence Control

The panel includes a buzzer assembly and a BUZZER STOP control.

This arrangement provides audible warning and a means of silencing the buzzer in accordance with the installed alarm logic.

Lamp and Buzzer Testing

The LAMP & BZ TEST control allows the operator to test the relevant indications and buzzer functions as provided by the panel wiring.

DARK–BRIGHT Adjustment

A front-mounted DARK–BRIGHT control is provided for illumination adjustment.

This is useful in a navigation bridge environment where excessive panel brightness can interfere with night vision.

Main Technical Specifications

The exact electrical specifications cannot be established from the photographs alone. The rear terminal arrangement and original circuit drawing should be checked before connecting the panel.

Front Panel Alarm & Control Identification

The photographed panel provides the following indications for each steering gear unit.

The operating meaning of each label is clear at a general level, but the exact initiating contacts, latching behavior and alarm priorities must be confirmed from the vessel's control drawings.

SOURCE Control

A selector marked SOURCE OFF / ON is visible on the right side of the panel, with a corresponding SOURCE indication area.

The exact function of this selector, including which control source it enables or disables, is not confirmed by the photograph.

START and STOP

The two START buttons and two red STOP buttons are arranged in alignment with the No.1 and No.2 columns.

They are intended as operator controls for the associated steering gear power-unit control circuits.

These controls should never be tested casually while a vessel is maneuvering or when steering availability could be affected.

BUZZER and BUZZER STOP

The panel provides an audible warning device and a separate silence control.

Depending on the circuit design, pressing BUZZER STOP may silence the audible alarm while the visual indication remains active until the underlying fault is cleared.

LAMP & BZ TEST

This control is intended for checking lamp and buzzer operation.

A successful lamp test verifies the indication hardware only; it does not necessarily prove that every field sensor, overload relay or alarm-input circuit is functioning.

DARK–BRIGHT

The brightness adjustment is relevant to bridge operations during daylight and nighttime navigation.

Its electrical implementation and adjustment range are not documented for this exact unit.

Main Components & Associated Identification Numbers

TAIYO AE3960 Panel Assembly

The principal identification reference visible on the manufacturer's label is AE3960.

This number should be included in all purchase requests, together with the panel's full front-view photograph and the date MAR-2005.

Because the TYPE field is blank, the complete assembly should not be identified using AE3960 alone without photographic or wiring confirmation.

No.1 and No.2 Indicator Lamp Assemblies

The front panel contains two groups of green and red indication lamps.

For replacement purposes, the lamp diameter, mounting arrangement, supply voltage, terminal style and lens color must be matched.

Steering Gear START / STOP Push Buttons

The panel contains individual START and STOP controls for each monitored power unit.

Replacement switches must match the original contact arrangement, mechanical dimensions and electrical ratings.

SOURCE Selector Switch

The right-side rotary selector is a potential replacement component.

Its exact contact configuration should be determined from the switch body or wiring diagram.

Alarm Buzzer

The panel includes an audible buzzer device.

Replacement requires confirmation of its operating voltage, current requirement and mechanical mounting.

Lamp and Buzzer Test Switch

This control is relevant to maintenance and pre-departure functional checks.

DARK–BRIGHT Control

The panel brightness adjustment may involve a potentiometer or another type of control device. Its exact internal construction has not been verified.

Terminal Block and Wiring Harness

The photographed assembly includes a substantial wiring harness with multiple conductors.

The cable and terminal identification must be preserved during removal or replacement.

PCB and internal part-number note: No internal circuit board or component nameplate is visible in the supplied photographs. No PCB part numbers can therefore be confirmed.

Marine Applications

Navigation Bridge / Wheelhouse

The primary intended installation context is a vessel's bridge or wheelhouse, where steering gear running status and selected alarms must be available to the watchkeeping officer.

Steering Gear Remote Control

The panel provides dedicated START and STOP controls, making it relevant to remote operation of the connected steering gear power-unit starters.

Twin Hydraulic Steering Gear Systems

The two-column layout is appropriate for installations with separately monitored No.1 and No.2 steering gear power units.

Merchant Vessels

Comparable steering gear alarm arrangements are used on bulk carriers, oil tankers, chemical tankers, container ships, general cargo vessels and other ships fitted with electrohydraulic steering gear.

The actual vessel compatibility of the photographed TAIYO panel must be confirmed.

Existing TAIYO Marine Electrical Systems

The panel may be particularly relevant where a vessel already uses TAIYO starter panels, switchboards or associated control equipment.

A common manufacturer name alone does not establish electrical compatibility.

Steering Gear Alarms & SOLAS Requirements

Steering gear monitoring is a safety-critical aspect of ship operation.

SOLAS Chapter II-1 contains requirements covering steering gear power units, control-system supplies, bridge operation, motor-running indications and hydraulic-fluid low-level alarms.

Relevant provisions include:

• Regulation II-1/29: Steering gear arrangements, bridge operation, control-system failure alarms and hydraulic-fluid reservoir low-level alarms.

• Regulation II-1/30: Additional requirements for electric and electrohydraulic steering gear, including motor-running indications and protection-related alarms.

These requirements explain why shipboard steering gear panels commonly include running, power-failure, overload, phase-failure and oil-level indications.

 

The presence of these functions on the photographed TAIYO panel does not, by itself, demonstrate compliance of a complete vessel installation. Compliance depends on the whole steering gear system, wiring, alarm locations, redundancy and approved testing arrangements.

For owners maintaining existing bridge control equipment, SM MARINE SERVICE™ can assist with enquiries for compatible TAIYO electrical equipment through www.smmarineservice.com.

Common Problems & Troubleshooting

Steering gear alarm panels operate as part of an essential vessel safety system. Any troubleshooting should be undertaken by qualified marine electrical personnel using the approved wiring diagrams and vessel procedures.

RUN Indicator Not Illuminating

If a steering gear pump is operating but the green RUN lamp is not illuminated, possible causes include a defective lamp, loose connection, faulty auxiliary contact or an interruption in the indication circuit.

Confirm actual motor operation independently before concluding that the indication circuit is defective.

NO VOLT Alarm Activated

A NO VOLT alarm may indicate loss of the monitored electrical supply or a fault in the associated voltage-detection circuit.

Check the relevant electrical supply, protection devices, wiring and monitoring contacts using approved procedures.

OVER LOAD Alarm Activated

A motor overload indication may be associated with excessive motor current, a motor protection relay operation or a control-circuit fault.

Investigate the underlying cause before resetting protective equipment.

PHASE FAIL Alarm Activated

A phase failure may prevent a three-phase steering gear motor from operating correctly.

The electrical supply and phase-monitoring circuit should be inspected by qualified personnel. Repeated starting attempts without identifying the fault may damage the motor.

L.O TK LOW Alarm Activated

A low-oil-level alarm requires prompt attention because it may indicate hydraulic fluid loss or an abnormal reservoir condition.

Check the relevant tank level and inspect the hydraulic system in accordance with the vessel's procedures.

ST-BY START Indication Abnormal

If the standby-start indication does not behave as expected, inspect the associated feedback and control circuit.

The panel's original logic must be verified before attributing the fault to an automatic standby-start function.

Alarm Buzzer Not Working

Possible causes include buzzer failure, supply problems, wiring faults, damaged contacts or a fault in the alarm control circuit.

A working visual indication does not guarantee that the audible alarm is operational.

START or STOP Button Not Responding

Potential causes include worn switch contacts, broken wiring, missing control voltage or an upstream permissive condition.

Do not bypass steering gear interlocks to force a motor start.

Intermittent Alarm Indications

Loose terminals, vibration-related connection faults, moisture ingress and deteriorated wiring can cause intermittent indications.

Inspect the wiring harness and associated terminal connections during an approved maintenance period.

Maintenance Tips

The TAIYO steering gear alarm panel should be maintained as part of the vessel's steering gear inspection and testing program.

Recommended maintenance considerations include visual inspection of the enclosure, indicator lamps, selector switch, push buttons, buzzer, wiring harness and terminal connections.

The LAMP & BZ TEST function can be used during an approved test to help identify failed lamps or buzzer problems.

Electrical inspections should include verification of control voltage, connection integrity and relevant field signals where authorized.

The steering gear system should also undergo the operational checks required by the vessel's procedures and applicable regulations. SOLAS steering gear requirements include pre-departure checking and testing arrangements, with specific exceptions and conditions depending on the vessel.

 

Before replacing this panel, technicians should record the existing wiring and verify the replacement's compatibility with the installed starter and alarm circuits.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supports international enquiries for the TAIYO Electric Steering Gear Alarm Panel AE3960 and related marine steering gear electrical control components.

The photographed assembly is described as a used original unit, including its wiring harness. Functional testing and current availability must be confirmed before purchase.

Related spare-parts enquiries may include complete steering gear alarm panels, indicator lamp assemblies, START/STOP push buttons, selector switches, alarm buzzers, lamp-test switches, wiring harnesses and matching TAIYO electrical control components.

Customers seeking new, used, refurbished or reconditioned equipment can submit their requirements for sourcing review.

Information Required for Quotation

For an accurate replacement enquiry, customers should provide the original manufacturer's nameplate, the complete front-panel photograph, the existing steering gear control-system model, wiring or terminal identification, operating voltage and required quantity.

The reference AE3960, date MAR-2005, and the No.1/No.2 alarm configuration are especially useful for identifying the photographed assembly.

Visit SM MARINE SERVICE™ for marine steering gear electrical equipment, automation panels and spare-parts sourcing.

Why Existing Ships Still Require Original TAIYO Steering Gear Panels

Marine steering gear electrical installations are commonly designed around specific motor starters, alarm inputs, control circuits and operator interfaces.

A replacement panel may look similar to the original while having different terminal assignments, switch contacts or alarm logic.

For an existing vessel, sourcing a matching original panel can help reduce the modifications required during maintenance, subject to verification of its condition and compatibility.

The MAR-2005 marking establishes the date shown on this particular unit's nameplate. It does not prove that the entire product family is obsolete or discontinued.

Frequently Asked Questions (FAQ)

What is the TAIYO Steering Gear Alarm Panel?

It is a marine electrical panel designed to monitor and control selected functions of a ship's steering gear power units.

Who manufactures this panel?

The nameplate identifies TAIYO ELECTRIC CO., LTD.

What is AE3960?

AE3960 is the number printed in the manufacturer's nameplate field marked NO. It is an important identification reference, but its classification as a model or serial number is not independently confirmed.

What is the manufacturing date?

The nameplate displays MAR-2005.

How many steering gear units does the panel monitor?

The front panel has separate indication columns for No.1 and No.2 units.

What alarms are provided?

The visible indications include NO VOLT, OVER LOAD, PHASE FAIL, L.O TK LOW and ST-BY START.

Can the panel start and stop steering gear pumps?

Separate START and STOP controls are visible for both units. Their actual operation depends on the connected control system.

Does the panel include an alarm buzzer?

Yes. A buzzer and BUZZER STOP control are visible.

Can this panel replace another TAIYO steering gear panel?

Only after confirming the wiring, control logic, electrical ratings, mounting and relevant system compatibility.

What is the panel supply voltage?

The exact voltage has not been verified from the photographs.

Can I purchase a used TAIYO AE3960 panel?

SM MARINE SERVICE™ can assist with sourcing enquiries. Actual availability and testing status require confirmation.

Where can international buyers request a quotation?

Contact SM MARINE SERVICE™ at info@smmarineservice.com or WhatsApp +88 01818 929292.

Short Product Description

The TAIYO Electric Steering Gear Alarm Panel AE3960 is a marine electrical monitoring and control panel designed for No.1 and No.2 steering gear power units. Manufactured under the TAIYO ELECTRIC CO., LTD. name, the photographed unit carries the date MAR-2005 and provides RUN, NO VOLT, OVER LOAD, PHASE FAIL, L.O TK LOW and ST-BY START indications. It also features START/STOP controls, an alarm buzzer, buzzer silence, lamp and buzzer testing, and brightness adjustment. The original used assembly includes an external wiring harness. SM MARINE SERVICE™ supports international enquiries for matching TAIYO steering gear panels and marine electrical spare parts, subject to compatibility and availability confirmation.

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Available Equipment Conditions:
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Specific product condition and availability are subject to confirmation.

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Contact Information

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Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: https://www.smmarineservice.com/

For quotations on the TAIYO Steering Gear Alarm Panel AE3960, replacement steering gear monitoring equipment, TAIYO marine electrical components and other marine automation spare parts, contact SM MARINE SERVICE™ with your equipment photographs, identification numbers and technical requirements.