MotorPumpDrive

Motor and pump control application for RMT.

Supported Motors

Motor	Interface	Wiring
HK222861U	UART Single Line Active High	ST.2 (220V) + ST.4 (Pin 3, 4, 6)
ZXGN420	UART via optocouplers HP1/HP2	ST.2 (220V) + ST.4 (Pin 1, 2, 4)
MDW Module	UART H1 + STx bus to Pump	ST.2 (220V) + ST.4 (Pin 1, 2, 4, 6)

Wiring Diagrams

For the rear panel pinout, refer to the RMT overview.

HK222861U

RMT ST.2 → Motor 220VAC:

• L (Switched Line) → L motor
• N (Neutral) → N motor

RMT ST.4 → Motor UART:

• Pin 3 (UART Single Line Active High) → UART motor
• Pin 4 (GND) → GND motor
• Pin 6 (+5V) → +5V motor

ZXGN420

RMT ST.2 → Motor 220VAC:

• L (Switched Line) → L motor
• N (Neutral) → N motor

RMT ST.4 → Motor UART (optocoupled):

• Pin 1 (TX Active High) → RX ZXGN420 (HP2 — optocoupler designation on the board)
• Pin 2 (UART Active Low) → TX ZXGN420 (HP1 — optocoupler designation on the board)
• Pin 4 (GND) → GND ZXGN420

MDW (Module + Pump)

MDW uses a three-device chain: RMT → MDW Module → MDW Pump.

RMT ST.2 → Module ST1 (220VAC):

• L → L
• N → N

RMT ST.4 → Module H1 (UART):

• Pin 1 (TX) → H1.RX
• Pin 2 (RX) → H1.TX
• Pin 4 (GND) → H1.GND
• Pin 6 (+5V) → H1.VCC

Module STx → Pump STx:

Module STx	Pump STx	Signal
STx.1	STx.1	310VDC
STx.3	STx.3	GND
STx.4	STx.4	TX → RX
STx.5	STx.5	RX → TX
STx.6	STx.6	GND
STx.7	STx.7	14VDC
STx.8	STx.8	5V_14VDC

Launching a Motor

warning

Before starting, make sure the motor is properly wired to the RMT according to the diagrams above. Connect the RMT to 220V power supply.

1. Turn on the RMT. The main menu will appear on the display.
2. Using the encoder, navigate to MotorPumpDrive and press OK.
3. Select the motor model from the list and press OK.
4. The motor control screen will appear with:
   • Setpoint — target speed, adjusted with the encoder.
   • Feedback — actual value reported by the motor.
   • Graph — real-time plot of setpoint vs. feedback, showing how the motor reaches and maintains the target speed.
   • Status — current state (RUN / STOP / ERROR).
5. Press OK to start the motor. Adjust the setpoint with the encoder.
6. Press OK again to stop the motor.

info

The graph shows the speed achievement curve — how the motor ramps up to the setpoint. This is useful for diagnostics: a healthy motor should reach the target speed smoothly within a few seconds.

Controls

Action	Control
Navigate menu	Rotate encoder
Select / Start / Stop	Press OK (center button)
Adjust setpoint	Rotate encoder (in motor control screen)
Go back	Press Back

caution

Always stop the motor before disconnecting any wires.