Hope65 control terminals are used for external start/stop, forward/reverse, jog, reset, analog speed reference, relay fault output, digital output, analog output, and RS485 communication. Typical terminals include DI1–DI5, AI1, AO1, DO, 10V/GND, 24V/COM, RA/RB/RC, and RS485A/RS485B.
For external terminal control, first prove that the motor runs from the keypad. Then set the command source to terminal control, assign DI functions in the F6 group, select the correct two-wire or three-wire mode, confirm source/sink wiring, and verify whether the input logic is active-high or active-low.
For analog control, use shielded cable, keep the cable length short, confirm the AI jumper setting for 0–10V or 0/4–20mA, and route analog/RS485 wiring separately from power and motor cables.
Only trained and qualified electrical personnel should wire or modify Hope65 control terminals, power terminals, motor terminals, or panel circuits.
Before touching terminals or wiring, switch off all input power, wait at least 10 minutes, and confirm that the DC bus voltage has discharged to a safe level. Do not change control wiring while the drive or panel is energized.
This article explains how to wire and configure the Hope65 Series Smart AC Drive / VFD control terminals. It covers digital inputs for start/stop and reset, analog input for speed reference, analog output for feedback, digital output, relay output, RS485 communication wiring, 10V and 24V auxiliary supplies, source/sink logic, NPN/PNP field devices, jumper settings, and practical troubleshooting.
Use this guide when the motor runs from the keypad but does not run from external switches, PLC, HMI, potentiometer, analog signal, relay interlock, or Modbus control. This article focuses on control wiring and parameter logic, not main power wiring. Power wiring should already be verified before control-side troubleshooting.
01 DI InputsStart, stop, reverse, jog, reset, emergency stop, external fault, multi-speed, and command switching. | 02 AI / AO0–10V or 0/4–20mA speed reference and analog feedback output with correct jumper selection. | 03 DO / Relay / RS485Fault output, running output, frequency detection, PLC/HMI status, and RS485 communication. |
| Product Series | Slanvert Hope65 Series Smart AC Drive / VFD |
| Small Models | Hope65GS2 0.75 kW to 1.5 kW models with DI1–DI4 control input structure. |
| Larger Models | Hope65GS2 2.2 kW to 5.5 kW and Hope65GT4 0.75 kW to 22 kW models with DI1–DI5 control input structure. |
| Control Scope | External start/stop, forward/reverse, jog, reset, emergency stop, external fault, analog speed, output status, relay fault output, and RS485 wiring. |
| User Level | Qualified electrical technician, panel builder, machine integrator, maintenance engineer, or automation engineer. |
Control wiring can be understood as five groups: command inputs, speed reference inputs, output feedback, relay output, and communication. The VFD must be configured to listen to the same control source that is actually wired.
01 Command Input
| + | 02 Speed Reference
| → | 03 Hope65 Logic
|
04 Output Feedback
| + | 05 Communication
| Commissioning Rule: First run the motor from the keypad. After keypad operation is verified, change to terminal, analog, or RS485 control and test one function at a time. | |
Smaller Hope65GS2 models use a compact control terminal layout. Confirm the actual terminal markings on the product before wiring.
| Category | Terminal | Function | Typical Use |
|---|---|---|---|
| Communication | RS485A / RS485B | RS485 differential positive/negative communication terminals. | PLC, HMI, SCADA, Modbus RTU communication. |
| Analog input | AI1 | Analog voltage/current input. Can also be used as DI through parameter setting. | 0–10V or 0/4–20mA speed reference. |
| Analog output | AO1 | Analog voltage/current output. | Frequency/current/status feedback to PLC or meter. |
| Digital input | DI1 / DI2 / DI3 | Normal digital inputs. | Forward, reverse, jog, reset, stop, fault, multi-speed. |
| Digital input / pulse | DI4 | Normal digital input or high-frequency pulse input. | Multi-speed, pulse input, counter, external signal. |
| Digital output | DO | Digital output or high-frequency pulse output. | Running output, fault output, frequency detection output. |
| Power supply | 10V / GND | +10V supply and analog signal ground. | Potentiometer reference supply and analog common. |
| Power supply | 24V / GND | +24V supply and 24V ground. | Digital input switching, sensors, contact input wiring. |
| Relay output | RA / RB / RC | RA/RB normally closed, RA/RC normally open. | Fault relay, running relay, interlock feedback. |
Larger Hope65GS2 and Hope65GT4 models include five digital inputs, where DI5 can be used as a normal digital input or high-frequency pulse input.
| Category | Terminal | Function | Typical Use |
|---|---|---|---|
| Communication | RS485A / RS485B | RS485 differential signal positive/negative terminals. | Modbus RTU communication with PLC/HMI/SCADA. |
| Analog input | AI1 | Analog voltage/current input. Can also be used as DI with parameter setting. | 0–10V, 4–20mA, or external speed command. |
| Analog output | AO1 | Analog voltage/current output. | Output frequency, output current, or process feedback signal. |
| Digital input | DI1 / DI2 / DI3 / DI4 | Normal digital inputs. | Run, reverse, reset, jog, external fault, multi-speed, emergency stop. |
| Digital input / pulse | DI5 | Normal digital input or high-frequency pulse input. | Pulse frequency input, counter, speed command, multi-speed command. |
| Digital output | DO | Digital output or high-frequency pulse output. | Running status, fault output, frequency reached output, pulse feedback. |
| Power supply | 10V / GND | +10V supply and analog ground reference. | Potentiometer speed reference. |
| Power supply | 24V / COM | +24V supply and 24V common. | Digital input switching and source/sink wiring. |
| Relay output | RA / RB / RC | RA/RB normally closed, RA/RC normally open. | Fault relay, running status, alarm or interlock output. |
Jumpers physically change how the terminal behaves. Always confirm the jumper position on the actual control board before connecting external devices.
| Jumper | Function | Typical Factory Setting | When to Change |
|---|---|---|---|
| J13 AI1 | Selects AI1 voltage input or current input. | 0–10V voltage input. | Change when AI1 must accept 0/4–20mA current signal. |
| J10 AO1 | Selects AO1 voltage output or current output. | 0–10V voltage output. | Change when PLC/meter expects 0/4–20mA feedback. |
| J12 PW | Selects source-type or sink-type digital input wiring method. | Source type. | Change when NPN/PNP or external controller wiring requires different DI logic. |
| J11 CME | Controls digital output ground isolation/common behavior. | Internally shorted to COM/GND depending model. | Disconnect when DO is driven by external power supply as required by wiring method. |
| J16 / J17 | Selects whether COM/GND is connected to PE. | Disconnected. | Use only when interference troubleshooting requires COM/GND to PE reference. |
Digital inputs are used to send ON/OFF commands to the drive. A DI terminal can be assigned to forward run, reverse run, reset, jog, free stop, external fault, multi-speed command, emergency stop, PID pause, control command switching, and other functions.
Internal 24V Control Uses Hope65 24V and COM/GND terminals with contact or field device input. | External Controller Uses PLC or sensor output. J12 jumper and common reference must match wiring method. | Active Logic DI can be active-high or active-low depending on F6 active-mode setting. |
| DI wiring rule: Use shielded cable where possible, keep wiring short, avoid routing with motor cables, and confirm source/sink/NPN/PNP logic before commissioning. | ||
| DI Function | Typical Use | Important Check |
|---|---|---|
| Forward run / run command | External start command from selector switch or PLC output. | Command source must be set to terminal control. |
| Reverse run / direction | Reverse rotation or direction selection. | Use only when reverse operation is mechanically safe. |
| Fault reset | Reset VFD fault through external button or PLC. | Do not reset repeatedly without correcting fault cause. |
| Forward jog / reverse jog | Short manual movement for commissioning or positioning. | Jog frequency and jog ramp parameters must be safe for machine. |
| External fault input | Stops drive when external device reports fault. | Active-high/active-low logic must match safety chain wiring. |
| Emergency stop / free stop | Fast command interruption or external stop logic. | This does not replace a proper machine safety circuit or mechanical brake where required. |
| Multi-speed command | Select preset speeds through DI combinations. | Confirm speed table values before production run. |
Terminal command mode defines how external contacts or PLC outputs control RUN, STOP, and direction. Choose the mode that matches the actual wiring.
| Mode | How It Works | Typical Wiring | Common Mistake |
|---|---|---|---|
| Two-wire mode 1 | Forward and reverse are controlled by two maintained DI states. | DI1 = forward, DI2 = reverse. | Both ON or both OFF can stop the drive depending logic. |
| Two-wire mode 2 | One DI acts as run enable, another DI selects direction. | DI1 = run enable, DI2 = direction selection. | Run enable is missing, so motor never starts. |
| Three-wire mode 1 | Stop/enable input must remain active; forward and reverse are momentary commands. | DI3 = three-wire enable, DI1/DI2 = forward/reverse buttons. | Enable circuit open, so start button has no effect. |
| Three-wire mode 2 | Enable, run command, and direction state are separated. | DI3 = enable, DI1 = run command, DI2 = direction. | Panel pushbutton design does not match selected parameter mode. |
AI1 is commonly used for speed reference from a potentiometer, PLC analog output, process controller, or sensor. It can accept voltage or current input depending on jumper and parameter settings.
Potentiometer Use 10V, AI1, and GND. The wiper signal goes to AI1. | PLC 0–10V PLC analog output signal goes to AI1, common reference goes to GND. | 4–20mA Set AI jumper for current input and configure frequency source/scaling correctly. |
| Check | Correct Condition | Problem If Wrong |
|---|---|---|
| AI jumper | J13 matches the actual signal: voltage or current. | Speed command may stay at 0 Hz or scale incorrectly. |
| Frequency source | F0 frequency source is set to analog input when AI controls speed. | Drive ignores analog signal. |
| Cable shielding | Shielded cable used, routed away from motor and power cables. | Unstable speed, random frequency changes, noise-related behavior. |
| Signal length | Analog wiring kept as short as possible and ideally not more than 20 m. | Weak analog signal becomes noisy or inaccurate. |
| Common reference | PLC/sensor analog common is correctly connected to GND reference. | AI voltage may float or read incorrectly. |
AO1 can be used to send an analog feedback signal to PLC, meter, indicator, or monitoring device. The output type must match the receiving device.
| AO Requirement | Setup Check | Practical Note |
|---|---|---|
| 0–10V output | J10 set for voltage output. | Use when PLC/meter analog input expects voltage. |
| 0/4–20mA output | J10 set for current output. | Use when receiver expects current loop feedback. |
| Stable feedback | Shielded signal cable, correct GND reference, separate routing. | Avoid running AO cable with U/V/W motor cable. |
The Hope65 provides a digital output terminal and a relay output. These are used for running status, fault output, frequency reached output, or other configured output indications.
DO Terminal Can work as digital output or high-speed pulse output depending parameter configuration. | Relay RA/RB/RC Use for fault output, running status, alarm, or interlock feedback to the panel. | Relay Coil Protection Install absorption/flyback diode when DO drives a relay coil. |
| Output | Use | Important Warning |
|---|---|---|
| DO | Digital output, open collector function, or high-speed pulse output depending setup. | Do not exceed output drive capacity. Use relay coil suppression diode where needed. |
| RA/RB | Normally closed relay contact. | Confirm whether the panel logic expects normally closed behavior. |
| RA/RC | Normally open relay contact. | Confirm relay output function parameter before using as fault or run signal. |
RS485 is used for Modbus communication with PLC, HMI, SCADA, data logger, or remote controller. This article covers wiring-level checks only. Register addresses and Modbus command details should be handled in the dedicated RS485 Modbus setup article.
| Check | Correct Condition | Problem If Wrong |
|---|---|---|
| A/B polarity | RS485A and RS485B connected according to master device convention. | No communication or timeout fault. |
| Cable type | Twisted-pair shielded communication cable preferred. | Noise, unstable communication, CRC errors, random timeout. |
| Cable routing | RS485 cable separated from motor cable and power cable. | Communication works at stop but fails during motor running. |
| Communication parameters | Drive address, baud rate, parity, and timeout match the master. | Master cannot read/write drive data. |
Wiring alone is not enough. The drive parameters must match the control method.
| Parameter / Group | Purpose | When to Check |
|---|---|---|
| F0-21 | Command source selection: keypad, terminal, or communication. | When RUN key or terminal start does not work as expected. |
| F0-02 | Frequency source selection: digital, analog, pulse, PID, communication, etc. | When motor starts but output frequency remains 0 Hz or speed reference is ignored. |
| F6-00 to F6-04 | Assigns functions to DI terminals. | When wiring external pushbuttons, selector switches, PLC outputs, reset, jog, or multi-speed. |
| F6 DI active mode | Defines active-high or active-low state of digital inputs. | When an input appears inverted or active when it should be inactive. |
| F6 terminal command mode | Selects two-wire or three-wire terminal command logic. | When external start/stop wiring does not match drive behavior. |
| F6 AI curve / filter | Scales and filters analog input signal. | When analog speed is unstable, nonlinear, reversed, or not reaching max/min speed. |
| F7 group | Configures AO, DO, and relay output functions. | When fault relay, running output, or feedback output does not match expected signal. |
| P0 group | Communication parameters for RS485/Modbus. | When PLC/HMI communication command or monitoring does not work. |
Use this checklist before moving from keypad operation to external control.
| No. | Check | Pass Condition |
|---|---|---|
| 1 | Keypad test | Motor runs correctly from keypad at low frequency. |
| 2 | Command source | F0-21 set to terminal or communication only after local test succeeds. |
| 3 | Frequency source | F0-02 matches digital, analog, pulse, or communication speed command. |
| 4 | DI assignment | F6 DI functions match actual wiring and machine logic. |
| 5 | Source/sink wiring | J12 and wiring match NPN/PNP or internal/external 24V method. |
| 6 | AI signal | AI voltage/current measured correctly and J13 matches signal type. |
| 7 | Output signals | DO, AO, and relay output functions are configured and tested. |
| 8 | Cable routing | Control, analog, and communication wiring routed separately from motor/power wiring. |
| Problem | Likely Cause | Corrective Action |
|---|---|---|
| Motor runs from keypad but not from terminal | F0-21 still set to keypad, DI wiring wrong, source/sink mismatch, wrong terminal mode. | Set command source to terminal, verify DI status, check J12, and confirm two-wire/three-wire mode. |
| Motor starts but speed stays 0 Hz | Frequency source is wrong or analog signal is missing. | Check F0-02, AI signal, J13, and frequency reference value. |
| Analog speed fluctuates | Analog cable noise, long cable, poor shielding, wrong ground reference. | Use shielded cable, separate route, confirm GND, add filtering/ferrite if needed. |
| PLC output does not activate DI | NPN/PNP mismatch, J12 wrong, no common reference, wrong active mode. | Match PLC output type with source/sink wiring and F6 active-mode setting. |
| Fault relay logic inverted | Panel uses NO contact but wired to NC, or relay output parameter mismatch. | Check RA/RB/RC wiring and output function parameter. |
| RS485 works at stop but fails during motor run | Communication cable routed near U/V/W motor cable or poor shielding. | Separate cable route, use shielded twisted pair, verify grounding and termination practice. |
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Smidnya technical support can help review your control wiring, DI logic, AI signal, relay output, RS485 connection, PLC output type, command source, frequency source, and terminal parameter setup before commissioning.