Basic Information

• Model: JANCD‑NTU01 (common: ‑1, ‑2, ‑3)

• Also known as: TU board, Power Supply Contactor Board

• Manufacturer: Yaskawa Electric / Motoman Robotics

• Applicable controller: NX100 series (not DX100/NXC100)

• Function: Servo power ON/OFF sequencing & interlock control

• Part of assembly: JZRCR‑YPU01 (Power Supply Unit)

• Origin: Japan

Technical Specifications

• Control voltage: 24 VDC (from controller backplane)

• Main power: 200–220 VAC three‑phase (to servo amps)

• Fuses:

  • 1Fu / 2Fu: 10 A / 250 V

  • 3Fu: 5 A / 125 V

• Operating temp: 0–50 °C

• Humidity: 5–80 % RH (non‑condensing)

• Protection: Overcurrent, overvoltage, emergency stop interlock

Key Functions

1. Servo power sequencing: Turns 1KM / 2KM main contactors ON/OFF in correct order.

2. Interlock safety: Enforces E‑stop, door open, mode interlocks before enabling servo power.

3. Contactor drive: Drives coils of high‑power servo contactors.

4. Status monitoring: Reports power‑on status and faults to the controller CPU.

5. Noise filtering: Works with the line filter (1Z) for clean control power.

Compatibility & Mounting

• Controller: NX100 only (used with JANCD‑NCP01 (CPU), JANCD‑NIO01 (I/O))

• Mounting: Installed in the YPU01 power supply unit inside NX100 cabinet

• Variants:

  • JANCD‑NTU01‑1: Standard NX100 version

  • JANCD‑NTU01‑2 / ‑3: Revisions with component upgrades

Installation & Maintenance

• Cut all power (AC and 24 VDC) before removal/installation.

• Use ESD protection when handling the board.

• Inspect fuses and contactor wiring during service.

• Verify E‑stop and safety door interlocks after replacement.

• Service only by qualified technicians.