Fuji Timer MS4SM Manual

The Fuji Timer MS4SM is a precision digital timer designed for industrial and commercial applications, featuring multiple timing modes, relay outputs, power supply options, and robust construction. Below are key sections covering safety, features, installation, programming, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Wiring Connections 7. Programming Modes 8. Advanced Functions 9. Maintenance & Care 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Digital display, function keys, relay outputs, power terminals, timing modes selector.

Feature	Description
Digital Display	4-digit LED display for time and status indication
Timing Modes	On-delay, Off-delay, Interval, Repeat cycle, One-shot
Time Range	0.1 seconds to 9999 hours
Relay Output	SPDT 10A 250V AC resistive load
Power Supply	24-240V AC/DC (depending on model)
Mounting	DIN rail or panel mount
Reset Function	Manual and automatic reset options
Memory Backup	Settings retained during power loss
Input Voltage	Wide range compatibility
Operating Temp	-10°C to +55°C

Installation

Unpack and inspect contents. Ensure proper mounting and wiring.

Mounting: Attach to DIN rail or panel using appropriate hardware.
Power Connection: Connect power supply to designated terminals observing polarity.
Input Wiring: Connect control signals to input terminals.
Output Wiring: Connect load to relay output terminals.
Grounding: Ensure proper earth ground connection.

WARNING! Disconnect power before installation. Ensure proper voltage ratings.

First-Time Setup

Power on timer; configure basic settings.

Select Timing Mode: Use mode selector switch or programming interface.
Set Time Values: Use programming keys to set desired timing parameters.
Configure Output: Set relay operation mode (normally open/closed).
Test Operation: Verify timer functions with test input signals.

CAUTION! Verify settings before applying load. Use proper safety precautions.

Specifications

Model: MS4SM Digital Timer
Time Setting Range: 0.1 sec to 9999 hours
Accuracy: ±0.5% of setting ±10 ms
Repeat Accuracy: ±10 ms
Power Consumption: ≤5VA
Contact Rating: 10A 250V AC (resistive)
Electrical Life: 100,000 operations minimum
Mechanical Life: 10,000,000 operations minimum
Insulation Resistance: 100MΩ min at 500V DC
Dielectric Strength: 2000V AC for 1 minute

Controls and Settings

Access programming via front panel keys. Display shows time values and status indicators.

Front Panel: MODE selector, UP/DOWN arrows, SET/ENTER, RESET, POWER indicator.

Timing Modes: On-delay (TON), Off-delay (TOFF), Interval (INT), Repeat cycle (RPT), One-shot (OS). Settings: Time base selection, Reset mode, Output configuration, Preset values.

Wiring Connections

Terminal block connections for power, input signals, and relay outputs.

Power Terminals: L (line), N (neutral) for AC models; +/- for DC models
Input Terminals: Control signal inputs for timing start/stop
Output Terminals: Common (C), Normally Open (NO), Normally Closed (NC)
Auxiliary Terminals: Reset input, external control signals

Tip: Use appropriate wire gauges and follow local electrical codes.

Programming Modes

Multiple timing modes for various applications.

On-Delay Mode: Output energizes after preset time from input signal
Off-Delay Mode: Output de-energizes after preset time from input removal
Interval Mode: Output energizes for preset time when input is received
Repeat Cycle: Continuous on/off cycling with independent time settings
One-Shot Mode: Single output pulse of preset duration

WARNING! Verify mode selection matches application requirements.

Advanced Functions

Reset Functions: Manual reset button, external reset input, automatic reset. Memory Backup: Settings retained during power interruption. Time Base Selection: Seconds, minutes, or hours.

Maintenance & Care

Disconnect power before maintenance. Clean with dry cloth only; no solvents or abrasives.

CAUTION! Do not disassemble unit. Keep away from moisture and extreme temperatures.

Regulatory Information

CE compliant for European market. UL/CSA standards for North America. RoHS compliant. Manufactured under ISO 9001 quality standards. For technical support, contact Fuji Electric or authorized distributor.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power indication	Power supply issue	Check voltage at terminals; verify wiring connections.
Timer not starting	Input signal missing	Verify input voltage; check control circuit.
Incorrect timing	Wrong time setting	Re-program time values; check time base selection.
Output not operating	Load/wiring issue	Check load connections; verify relay operation.
Display error codes	Internal fault	Reset unit; contact technical support if persistent.

Reset: Use reset button or power cycle to restore defaults.

Service: Contact authorized Fuji Electric service center for repairs.