Frequency Inverter · Quick Start Guide
M-Driver M980 – Initial Commissioning
Step-by-step commissioning guide for the M980 IP66 frequency inverter for asynchronous and synchronous motors. Control via keypad, terminals or Modbus RTU.
IP66 · Protection Rating
2 DI (NPN) · 1 AI · 2 Relays
Modbus RTU (RS-485)
Safety Notice Before Commissioning
Disconnect all supply voltage before any wiring work and secure against re-energization.
The M980 operates at hazardous voltages up to 400 V AC. Even after switching off, the DC bus
may remain energized for several minutes — wait at least 5 minutes before touching power terminals
and verify with a meter.
The M980 has IP66 protection — all cable glands must be fully tightened to maintain the
protection rating.
Minimum installation clearances: sides ≥ 10 mm, top/bottom ≥ 200 mm.
The complete manual (980 Series High Protection Inverter User Manual) must be read before
commissioning.
Group F8 – Motor Control Parameters
| Parameter | Name | Value to Set | Description |
|---|---|---|---|
| F8-00 | Motor Rated Power | Per nameplate | Rated power in kW from the motor nameplate |
| F8-01 | Motor Rated Voltage | Per nameplate | Rated voltage in V (e.g. 230 V or 400 V) |
| F8-02 | Motor Rated Current | Per nameplate | Rated current in A – basis for motor protection |
| F8-03 | Motor Rated Frequency | 50.0 Hz | Rated frequency per nameplate (EU: 50 Hz) |
| F8-04 | Motor Rated Speed | Per nameplate | Rated speed in rpm (e.g. 1460 rpm) |
| F8-06 | Motor Control Mode | 0 or 1 | 0 = V/F control (default); 1 = Sensorless vector control async. (IMSVC); 2 = Sensorless vector control sync. (FMSVC) |
Parameter Auto-Tuning for Vector Control:
When using
F8-06 = 1 or F8-06 = 2, motor parameter
identification is recommended. Set F8-07 = 1 (static, motor cannot rotate
freely) or F8-07 = 2 (dynamic, motor rotates freely without load), then
issue a start command. The inverter automatically identifies stator/rotor resistance and
inductances. After completion, F8-07 returns to 0.
F0-00 – Command Source
0
Keypad — RUN/STOP key on device panel
Factory default. Simplest option for initial testing.
Factory default. Simplest option for initial testing.
1
Terminal Control — Start/Stop via DI3/DI4
Control via digital input terminals. See Step 5 for DI configuration.
Control via digital input terminals. See Step 5 for DI configuration.
2
Communication (Modbus RTU) — Control via RS-485
Start/Stop via register 0x0002. See Step 6 for Modbus configuration.
Start/Stop via register 0x0002. See Step 6 for Modbus configuration.
STOP key always active:
Factory default
F0-20 = 1 — the STOP key on the panel is active in all
operating modes (including terminal and communication control).
Always accessible in emergencies.
F0-01 – Main Frequency Source
0
Parameter value F0-16 — fixed digital setpoint
Enter frequency directly in F0-16 (default: 50.0 Hz). Adjustable via UP/DOWN keys during operation.
Enter frequency directly in F0-16 (default: 50.0 Hz). Adjustable via UP/DOWN keys during operation.
1
Panel Potentiometer — analog adjustment on device
Factory default. Setpoint via the integrated potentiometer on the device.
Factory default. Setpoint via the integrated potentiometer on the device.
2
AI1 — external analog input
Voltage (0–10 V) or current (0/4–20 mA) at terminal AI1. Signal format via F0-07.
Voltage (0–10 V) or current (0/4–20 mA) at terminal AI1. Signal format via F0-07.
8
Communication (Modbus RTU) — setpoint via RS-485
Write frequency setpoint to special register 0x0001 (10000 = 100% = maximum frequency).
Write frequency setpoint to special register 0x0001 (10000 = 100% = maximum frequency).
Configure Analog Input (when F0-01 = 2)
| Parameter | Name | Value (units digit) | Description |
|---|---|---|---|
| F0-07 | AI1 Signal Format | 0 | 0 = 0–10 V; 1 = 0–20 mA; 2 = 4–20 mA; 3 = 20–4 mA; 4 = 20–0 mA; 5 = 10–0 V Units digit of F0-07 = AI1 format |
| F0-09 | Upper Frequency Limit | 50.0 Hz | Maximum output frequency (= 100% setpoint) |
| F0-10 | Lower Frequency Limit | 0.0 Hz | Minimum output frequency (= 0% setpoint) |
Group F0 / F3 – Acceleration and Deceleration Times
| Parameter | Name | Value to Set | Description |
|---|---|---|---|
| F0-04 | Acceleration Time 1 | Model-dep. (s) | Time from 0 Hz to upper frequency limit (F0-09). Range: 0–500.0 s |
| F0-05 | Deceleration Time 1 | Model-dep. (s) | Time from upper frequency limit to 0 Hz. Range: 0–500.0 s |
| F0-08 | Stop Mode | 0 | 0 = Ramp stop (coasts down per deceleration time); 1 = Free-run stop (output disabled immediately) |
| F3-08 | Ramp Shape | 0 | 0 = Linear ramp; 1 = S-curve (smooth start/stop). With S-curve: adjust F3-09 and F3-10 |
No built-in brake chopper!
The M980 does not have an integrated brake chopper. With regenerative loads (e.g. cranes, high-inertia fans), the DC bus voltage may rise excessively during deceleration and trigger an overvoltage fault. In such cases, connect an external brake chopper with braking resistor between the DC bus terminals (+) and (−), or increase the deceleration time.
The M980 does not have an integrated brake chopper. With regenerative loads (e.g. cranes, high-inertia fans), the DC bus voltage may rise excessively during deceleration and trigger an overvoltage fault. In such cases, connect an external brake chopper with braking resistor between the DC bus terminals (+) and (−), or increase the deceleration time.
Control Terminal Overview
Only 2 physical digital inputs – NPN only!
The M980 has only terminals DI3 and DI4 as physical digital inputs. Parameters F1-00 (DI1) and F1-01 (DI2) exist in the menu but have no physical terminal. The inputs are NPN only (sink logic). For PLCs with PNP outputs, interposing relays are required.
The M980 has only terminals DI3 and DI4 as physical digital inputs. Parameters F1-00 (DI1) and F1-01 (DI2) exist in the menu but have no physical terminal. The inputs are NPN only (sink logic). For PLCs with PNP outputs, interposing relays are required.
| Terminal | Function | Notes |
|---|---|---|
| +V | DC supply for DI circuit | 5 V / 10 V / 24 V selectable via F0-06 (default: 10 V) |
| DI3 | Digital input 3 (physical) | Function via F1-02. Default: Multi-step bit 1 |
| DI4 | Digital input 4 (physical) | Function via F1-03. Default: Multi-step bit 2 |
| COM | Common ground for DI | Connect to negative terminal of NPN output |
| AI1 | Analog input 1 | 0–10 V / 0–20 mA / 4–20 mA depending on F0-07 |
| GND | Analog ground | Reference potential for AI1 and AO1 |
| AO1 | Analog output 1 | Function via F1-28. Default: output frequency |
| RA/RB/RC | Relay 1 | Function via F1-08. Default: inverter running (value 1). RA-RB = NO, RA-RC = NC |
| RA2/RB2/RC2 | Relay 2 | Function via F1-09. Default: inverter fault (value 2) |
| RS485+ / RS485− | Modbus RTU | RS-485 bus for Modbus RTU. Termination resistor required at last node |
Group F1 – DI Function Assignment
| Parameter | Terminal | Typical Assignment | Description |
|---|---|---|---|
| F1-02 | DI3 | 1 = FWD | 1 = Forward; 2 = Reverse; 5 = JOG FWD; 7 = Fault reset; 8–10 = Multi-step bit 1–3 |
| F1-03 | DI4 | 2 = REV | Same options as F1-02. Typical: REV or fault reset |
| F1-06 | – | 0 | Terminal operating mode: 0 = 2-wire mode 1 (FWD/REV separate active); 1 = 2-wire mode 2; 2/3 = 3-wire |
2-wire mode (F1-06 = 0):
DI3 = FWD (
F1-02 = 1), DI4 = REV (F1-03 = 2) — each normally
open contact against COM. Closing both inputs simultaneously stops the inverter.
Set command source to F0-00 = 1 (terminal control).
Group F7 – Communication Parameters
| Parameter | Name | Value to Set | Description |
|---|---|---|---|
| F0-00 | Command Source | 2 | Switch to communication to enable Start/Stop via Modbus |
| F0-01 | Main Frequency Source | 8 | Switch to communication to enable frequency setpoint via Modbus |
| F7-00 | Device Address | 1–249 | Unique slave address on the bus. Factory default: 1 |
| F7-01 | Baud Rate | 0 = 9600 | 0 = 9600; 1 = 19200; 2 = 38400; 3 = 57600; 4 = 115200 bps |
| F7-02 | Data Format | 3 = 8-N-1 | 3 = 8-N-1 (default); 0 = 8-N-2; 1 = 8-E-1; 2 = 8-O-1 |
| F7-03 | Communication Timeout | 0.0 s | 0.0 = disabled. On timeout: fault Err16 |
Special Function Registers (Write, FC 06)
| Name | Hex Address | Dec. Address | Example Value | Meaning |
|---|---|---|---|---|
| Frequency setpoint | 0x0001 | 1 | 5000 | −10000–+10000; 10000 = 100% = max. frequency (F0-09). Example: 5000 = 50% |
| Control command | 0x0002 | 2 | 1 | 1 = Forward; 2 = Reverse; 5 = Free-run stop; 6 = Ramp stop; 7 = Fault reset |
Key Holding Registers (Read/Write, FC 03/06)
| Name | Hex Address | Dec. Address | Description |
|---|---|---|---|
| Command source | 0xF000 | 61440 | F0-00: 0=Keypad; 1=Terminal; 2=Modbus |
| Frequency source | 0xF001 | 61441 | F0-01: 0=F0-16; 1=Potentiometer; 2=AI1; 8=Communication |
| Acceleration time 1 | 0xF004 | 61444 | F0-04: 0–5000 (= 0.0–500.0 s, factor 10) |
| Deceleration time 1 | 0xF005 | 61445 | F0-05: 0–5000 (= 0.0–500.0 s, factor 10) |
| Operating status (RO) | 0x1000 | 4096 | U0-00: 1=Forward; 2=Reverse; 3=Stop |
| Actual output frequency (RO) | 0x1003 | 4099 | U0-03: value × 0.1 Hz |
| Output current (RO) | 0x1006 | 4102 | U0-06: value × 0.1 A |
| Fault code (RO) | 0x1001 | 4097 | U0-01: 0 = no fault; >0 = fault number (ErrXX) |
Modbus Address Scheme:
Parameter registers follow the pattern
0xFGPP — G = group digit (0–9),
PP = parameter number (hex). Example: F7-01 → group 7, no. 01 →
0xF701. Monitoring registers (U0-xx) start at 0x1000.
Complete all items before first start
Fault display:
Faults are displayed as
ErrXX on the screen (e.g. Err02 = overcurrent during acceleration,
Err14 = module overtemperature, Err16 = communication timeout).
Last 3 faults with operating data retrievable via U0-51–U0-53
(Modbus: 0x1033–0x1035). Reset via panel RESET key or
Modbus register 0x0002 = 7.
M-Driver M980 in the Shop
· This document does not replace the complete 980 Series High Protection Inverter User Manual.
Rev. 1.0
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