
CONTENTS
CHAPTER 1 PRODUCT INFORMATION ...................................................................................................................... 1
1.1 Designation ........................................................................................................................................................ 1
1.2 Nameplate .......................................................................................................................................................... 1
1.3 General Specifications ....................................................................................................................................... 2
CHAPTER 2 WIRING ..................................................................................................................................................... 3
2.1 Typical Wiring..................................................................................................................................................... 3
2.2 Terminals ........................................................................................................................................................... 5
CHAPTER 3 EASY SETUP ............................................................................................................................................ 7
3.1 Logic Of Control ................................................................................................................................................. 7
3.2 Step By Step Setup ............................................................................................................................................ 9
CHAPTER 4 TROUBLESHOOTING ............................................................................................................................ 22
4.1 Faults And Solutions ........................................................................................................................................ 22
4.2 Common Symptoms And Diagnostics ............................................................................................................. 25
CHAPTER 5 FUNCTION CODE TABLE ...................................................................................................................... 26
5.1 General Function Codes .................................................................................................................................. 26
5.2 Monitoring Function Codes .............................................................................................................................. 52

CHA P TER 1 PRODUCT INF OR MATI O N
1. 1 Designation
MODEL: MD310T0.7B
INPUT: 3~ 380-440V, 3.4A, 50Hz/60Hz
OUTPUT: 3~ 0-440V, 2.1A, 0-600Hz, 0.75kW
Suzhou Inovance Technology Co.,Ltd.
S/N: 013012024C700087
Nameplate
AC drive model
Rated input
Rated output
Manufacturer
Barcode
S/N code

1. 3 General Specifications
1.9 3.4 5.0 5.8 10.5 14.6 20.5 26.0 35.0 38.5
[kW] 0.4 0.75 1. 5 2.2 3.7 5.5 7.5 11 15 18.5
[HP] 0.5 1 2 3 5 7.5 10 15 20 25
1.5 2.1 3.8 5.1 9.0 13.0 17.0 25.0 32.0 37
1.0 1.5 3.0 4.0 5.9 8.9 11.0 17.0 21.0 24.0
[kW] ≥0.15 ≥0.15 ≥0.15 ≥0.25 ≥0.30 ≥0.40 ≥0. 50 ≥0.80 ≥1.00 ≥1.30
[Ω] ≥300 ≥300 ≥220 ≥200 ≥130 ≥90 ≥65 ≥43 ≥32 ≥25
300 Hz for SVC control, 600Hz fo r V/F control
Recom mended
Braki ng Resistor
Three-phase 380 to 440 VAC ,-15% to 20% (323 to 528 VAC)
Three-phase 380 VAC (pr op or tio nal to input voltage)
Mou nti ng Hole Diam eter [mm ]
120% for 1 hour & 150% for 60 Sec &180% for 2 Sec
50/60 Hz, ±5% (47.5 to 63 Hz)
☆
: At 6 kHz carrier frequency without derating
★: The mounting dimensions are shown below.
FEW/RED
A
W
B
H
D
MD
310
FED
/
REW
FED
/
REW
LOCAL
RUN
/
ERR
A
W
B
H1
D
H
For models above 7.5 kW, the fan
is installed on the top of the AC
drive.
MD
310
FED
/
REW
FED
/
REW
LOCAL
RUN
/
ERR
Figure 1..Model of 0.4 to 2.2 kW
Figure 2..Model of 3.7 to 18.5 kW

CHA P TER 2 WIRING
2. 1 Typical Wiring
Wiring Of Three-Phase 220/380 VAC (Keypad Control, F6-00 = 0)
DI1
DI2
DI3
DI4
DI5
COM
W
V
U
(-)
P(+)
BR
Braking resistor (optional)
+24V
OP
MD310
T/C
T/B
T/A
Multi-function relay output
(Fault output)
+10V
AI1
GND
GND
AO1
Analog output
(No function assigned)
+24V
COM
J7
GND
485-
485+
Analog inputs
(Frequency sources)
RS485
J3
J1
Interface for the external keypad
COM
FM
DO1
CME
Open collector 1
(High-speed pulse output)
Extension card interface
Open collector 2
(Running state)
Multi-function
open-collector output
AI2
VI
J5
J4
I2V2
Three-phase 220/380 V
power supply
R
S
MCCB
T
Wiring Of Three-Phase 220/380 VAC (Terminal Control, F6-00 = 1)
DI1
DI2
DI3
DI4
DI5
COM
W
V
U
(-)
P(+)
BR
Braking resistor (optional)
+24V
OP
MD310
T/C
T/B
T/A
Multi-function relay output
(Fault output)
+10V
AI1
GND
GND
AO1
Analog output
(No function assigned)
+24V
COM
J7
GND
485-
485+
Analog inputs
(Frequency sources)
RS485
J3
J1
Interface for the external keypad
COM
FM
DO1
CME
Open collector 1
(High-speed pulse output)
Extension card interface
Open collector 2
(Running state)
Multi-function
open-collector output
AI2
VI
J5
J4
I2 V2
Three-phase 220/380 V
power supply
R
S
MCCB
T
FWD
Multi-reference terminal 2
FJOG
RESET
Multi-reference terminal 1

Wiring Of Single-Phase 220 VAC (Keypad Control, F6-00 = 0)
DI1
DI2
DI3
DI4
DI5
COM
Single-phase 220 V
power Supply
L1
L2
W
V
U
(-)
P(+)
BR
Braking resistor (optional)
+24V
OP
MD310
T/C
T/B
T/A
Multi-function relay output
(Fault output)
+10V
AI1
GND
GND
AO1
Analog output
(No function assigned)
MCCB
+24V
COM
J7
GND
485-
485+
Analog inputs
(Frequency sources)
RS485
J3
J1
Interface for the external keypad
COM
FM
DO1
CME
Open collector 1
(High-speed pulse output)
Extension card interface
Open collector 2
(Running state)
Multi-function
open-collector output
AI2
VI
J5
J4
I2V2
Wiring Of Single-Phase 220 VAC (Terminal Control, F6-00 = 1)
DI1
DI2
DI3
DI4
DI5
COM
Single-phase 220 V
power Supply
L1
L2
W
V
U
(-)
P(+)
BR
Braking resistor (optional)
+24V
OP
MD310
T/C
T/B
T/A
Multi-function relay output
(Fault output)
+10V
AI1
GND
GND
AO1
Analog output
(No function assigned)
MCCB
+24V
COM
J7
GND
485-
485+
Analog inputs
( Frequency sources)
RS485
J3
J1
Interface for the external keypad
COM
FM
DO1
CME
Open collector 1
(High-speed pulse output)
Extension card interface
Open collector 2
(Running state)
Multi-function
open-collector output
AI2
VI
J5
J4
I2 V2
FWD
Multi-reference terminal 2
FJOG
RESET
Multi-reference terminal 1

2. 2 Terminals
Terminals Of Main Circuit
Table 2-1: Main circuit terminals of three-phase
Three-phase power supply input terminals
Connect to the three-phase AC power supply
Positive and negative terminals of DC bus
Common DC bus input point
Connecting terminals of braking resistor
Connect to a braking resistor
Connect to a three-phase motor.
Table 2-2: Main circuit terminals of single-phase
Single-phase power supply input terminals
Connect to the single-phase 220 VAC power supply.
Positive and negative terminals of DC bus
Common DC bus input point.
Connecting terminals of braking resistor
Connect to a braking resistor.
Connect to a three-phase motor.

Terminals Of Control Circuit
Provide +10 VDC power supply externally. Usually, it provides power supply
to the external potentiometer with resistance range of 1 to 5 kΩ.
Maximum output current: 10 mA
Provide +24 VDC power supply externally. Usually, it provides power supply
to DI/DO terminals and external sensors.
Maximum output current: 200 mA
Input terminal of external power supply
Connect to +24 VDC by default. When DI1 to DI5 need to be driven by the
external signal, OP needs to be connected to the external power supply and
be disconnected from +24 VDC.
AI1 input voltage range: 0 to 10 VDC
AI2 input range: 0 to 10 VDC or 4 to 20 mA
Impedance: 22 kΩ
Optical coupling isolation, compatible with dual-polarity input
Impedance: 2.4 kΩ.
Input voltage range: 9 to 30 VDC
Besides features of DI1 to DI4, it can be used for high-speed pulse input.
Maximum input frequency: 20 kHz.
Voltage or current output, determined by jumper J5 on the control board.
Output voltage range: 0 to 10 VDC.
Output current range: 0 to 20 mA.
Multi-function open-collector output
Voltage range: 0 to 24 VDC.
Current range: 0 to 50 mA.
Output pulse frequency range: 0 to 50 kHz. For jumper J6, CME and COM
are shorted by default.
Contact driving capacity:
250 VAC, 0.2A
30 VDC, 1 A

CHA P TE R 3 EASY SE TUP
3. 1 Logic Of Control
Complete Timing Diagram
DC injection b rakin g 2 freq uency threshold
F6-06 [ x.xSec ]: F6-13 [ x%]: F6-14 [ x.xSec]:
DC inj ection brak ing 1 activ e time(if F6-00 =0) DC injjection braking 2 level DC injection b rakin g 2 active time
Pre-excitation active time (if F6-00= 2)
F6-05 [ x%]: F6-12 [ x.xSec ] (Defaul t: 0.0Sec )
DC inj ection brak ing 1 lev el (if F6-00=0 ) DC injection b rakin g 2 de la y time
Pre-excitation le vel (if F6-0 0=2)
t1
DC Injection/
Pr e-excitation
Fr equenc y
output
co mmand

Timing Diagram Description
-The AC drive waits for the RUN signal.
-The AC drive receives the Forward RUN command.
-The IGBT becomes active.
-DC Injection Braking 1/Pre-excitation is enabled if F6-06 > 0.
(if F6-00 = 0, it is "DC Injection Braking 1";
if F6-00 = 2, it is "Pre-excitation")
-DC Injection Braking 1/Pre-excitation is disabled.
-The startup frequency becomes active if F6-04 > 0.
-The startup frequency becomes inactive.
- The motor ramps up to the expected frequency.
-Motor runs at expected frequency.
-The Forward RUN command is cancelled.
-The motor ramps down to zero frequency.
-The frequency output command reaches the DC Injection Braking 2
frequency
RUN (if F6-12 = 0)
Inhabit (if F6-12 > 0)
-The IGBT shall become inactive if DC Injection Braking 2 delay time
is not zero.
-After the delay time set in F6-12, the IGBT becomes active again
-DC Injection Braking 2 is enabled if F6-14 > 0
-DC Injection Braking 2 is disabled.
-The IGBT turns inactive.

3. 2 Step By Step Setup
Setup Flowchart
Set PI of velocity loop if it’s SVC controlling mode
Check the nameplate and wiring
Apply main power to AC drive
Check motor rotation and machine travelling direction
Set acceleration and deceleration time
Set startup frequency if needed
Set DC injection braking/pre-excitation if needed
Set start mode and stop mode
Perform motor tuning if it’s SVC control mode

Step 1: Get Familiar With Keypad
Overview
Indicators
FWD/REV : It indicates forward or reverse rotation.
OFF indicates forward rotation and ON indicates reverse rotation.
TUNE/TC : ON indicates torque control mode, blinking slowly indicates auto-tuning state, blinking quickly indicates fault state.
REMOTE : It indicates whether the AC drive is operated by means of keypad, terminals or communication.
OFF indicates keypad control, ON indicates terminal control, and blinking indicates communication control.
RUN/ERR : It indicates the state of the AC drive.
, OFF indicates the stop state, ON (green) indicates the running state, and ON (red) indicates the faulty state.
LED Display
The 5-digit LED display is able to display the frequency reference, output frequency, monitoring data and fault codes.

Enter or exit Level I menu.
Enter the menu interfaces level by level, and confirm the parameter setting.
Increase data or function code.
Decrease data or function code.
Select the displayed parameters in turn in the stop or running state, and select the digit to be
modified when modifying parameters.
Start the AC drive in the keypad operation mode.
Stop the AC drive when it is in the running state and perform the reset operation when it is in
the faulty state. The functions of this key are restricted by F7-02.
Perform function switchover (such as quick switchover of command source or direction)
according to the setting of F7-01.
MF.K key function
selection
0: MF.K key disabled
1: Switchover from remote control (terminal or
communication) to keypad control
2: Switchover between forward rotation and
reverse rotation
3: Forward jog
4: Reverse jog
5: Individualized parameter display
0: STOP/RESET key enabled only in keypad
control
1: STOP/RESET key enabled in any
operation mode

50.00 F0 F0 F0 01 0 F0 02
U0 F0 27 2
save the value
PRG
ENTER
PRG
ENTER
PRG
ENTER
ENTER
PRG
PRG
Function Code Arrangement
Standard function code group
Compatible with MD380 series function codes
Advanced function code group
Running state function code group
Display of basic parameters

Step 2: Set Motor Parameters
0: Common asynchronous motor
1: Variable-frequency asynchronous motor
0.01 to maximum frequency
Rated motor rotational
speed
Step 3: Set Motor Controlling Mode
0: Sensorless vector control (SVC)
2: Voltage/Frequency control (V/F)
Step 4: Perform Motor Tuning If It’s SVC Control Mode
0: No auto-tuning
1: Static auto-tuning
2: Complete dynamic auto-tuning
Step 5: Set Frequency Reference
Main frequency source
X selection
0: Digital setting F0-08
(non-retentive at power failure)
1: Digital setting F0-08
(retentive at power failure)
2: AI1
3: Reserved
4: Reserved
5: Pulse setting (DI5)
6: Multi-reference
7: Simple PLC
8: PID
9: Communication setting
Auxiliary frequency
source Y selection
The same as F0-03 (Main frequency source X
selection)

Frequency source
selection
0:X + Y
1: X – Y
2: Max. (X, Y)
3: Min. (X, Y)
0: Main frequency source X
1: X and Y superposition
2: Switchover between X and Y
(by DI terminal)
3: Switchover between X and
"X and Y superposition"(by DI
terminal)
4: Switchover between Y and
"X and Y superposition"(by DI
terminal)
0.00 to maximum frequency
Auxiliary frequency source
Digital setting (retentive)
Digital input (retentive)
Digital input (non-retentive)
Final frequency reference
X and Y superposition relationship
The larger of X and Y
Max. (X, Y)
The smaller of X and Y
Min. (X, Y)
Difference between X and Y
X – Y

Step 6: Select Operation Mode
0: Keypad control
1: Terminal control
2: Communication control
0: Two-wire mode 1
1: Two-wire mode 2
2: Three-wire mode 1
3: Three-wire mode 2

Step 7: Set Start Mode And Stop Mode
0: Direct start
1: Reserved
2: Pre-excited start
0: Decelerate to stop
1: Coast to stop
Step 8: Set Acceleration And Deceleration Parameters
0.00 to 650.00 (if F0-19 = 2)
0.0 to 6500.0 (if F0-19 = 1)
0 to 65000 (if F0-19 = 0)
0.00 to 650.00 (if F0-19 = 2)
0.0 to 6500.0 (if F0-19 = 1)
0 to 65000 (if F0-19 = 0)
Acceleration/Decelerat
ion time unit
Acceleration/Decelerat
ion mode
0: Linear mode
1: S-curve mode A
2: S-curve mode B

Step 9: Set DI And DO If Needed
DI Setting
0: No function
1: Forward RUN (FWD)
2: Reverse RUN (REV)
3: Three-wire control
4: Forward JOG (FJOG)
5: Reverse JOG (RJOG)
6: Terminal UP
7: Terminal DOWN
8: Coast to stop
9: Fault reset (RESET)
10: RUN pause
11: External fault normally open (NO) input
12: Multi-reference terminal 1
13: Multi-reference terminal 2
14: Multi-reference terminal 3
15: Multi-reference terminal 4
16: Terminal 1 for acceleration/deceleration
time selection
17: Terminal 2 for acceleration/deceleration
time selection
18: Frequency source switchover
19: UP and DOWN setting clear (terminal,
keypad)
20: Command source switchover terminal 1
21: Acceleration/Deceleration prohibited
22: PID pause
23: PLC status reset
24: Swing pause
25: Counter input
26: Counter reset
27: Length count input
28: Length reset
29: Torque control prohibited
30: Pulse input (enabled only for DI5)
31: Reserved
32: Immediate DC injection braking
33: External fault normally closed (NC) input
34: Frequency modification forbidden
35: PID action direction reverse
36: External STOP terminal 1
37: Command source switchover terminal 2
38: PID integral pause
39: Switchover between
main frequency source X and preset
frequency
40: Switchover between auxiliary frequency
source Y and preset frequency
41: Motor selection terminal 1
42: Motor selection terminal 2
43: PID parameter switchover
44: User-defined fault 1
45: User-defined fault 2
46: Speed control/Torque control switchover
47: Emergency stop
48: External STOP terminal 2
49: Deceleration DC injection braking
50: Clear the current running time
12
Multi-reference
terminal 1
13
Multi-reference
terminal 2

DI active mode
selection 1
DI5 active mode:
☆
0: High level active
1: Low level active
DI4 active mode:
☆
0: High level active
1: Low level active
DI3 active mode:
☆
0: High level active
1: Low level active
DI 2 active mode:
☆
0: High level active
1: Low level active
DI 1 active mode:
☆
0: High level active
1: Low level active
☆
: ‘High level active’ means that, if a high level voltage is applied to DI terminal, the DI signal will be seen as active.
‘Low level active’ means that, if a low level voltage is applied to DI terminal, the DI signal will be seen as active.

0: Pulse output (FMP)
1: Switch signal output (FMR)
FMR function
(open-collector output
terminal) selection
0: No output
1: AC drive running
2: Fault output (stop)
3: Frequency-level detection FDT1 output
4: Frequency reached
5: Zero-speed running (no output at stop)
6: Motor overload pre-warning
7: AC drive overload pre-warning
8: Set count value reached
9: Designated count value reached
10: Length reached
11: PLC cycle completed
12: Accumulative running time reached
13: Frequency limited
14: Torque limited
15: Ready for RUN
16: Reserved
17: Frequency upper limit reached
18: Frequency lower limit reached (no output at
stop)
19: Undervoltage state output
20: Communication setting
21: Reserved
22: Reserved
23: Zero-speed running 2 (having output at
stop)
24: Accumulative power-on time reached
25: Frequency level detection FDT2 output
26: Frequency 1 reached
27: Frequency 2 reached
28: Current 1 reached
29: Current 2 reached
30: Timing duration reached
31: AI1 input limit exceeded
32: Load becoming 0
33: Reverse running
34: Zero current state
35: Module temperature reached
36:Software current limit exceeded
37: Frequency lower limit reached (having
output at stop)
38: Alarm output
39: Motor overheat warning
40: Current running time reached
41: Fault output (no output at undervoltage)
Relay function
(T/A-T/B-T/C) selection
Extension card relay
function (P/A-P/B-P/C)
selection
DO1 function selection
(open-collector output
terminal)
Extension card DO2
function selection
Relay 1 output delay
time
Relay 2 output delay
time

DO2 active mode:
0: Positive logic
1: Negative logic
DO1 active mode:
0: Positive logic
1: Negative logic
Relay 2 active mode:
0: Positive logic
1: Negative logic
Relay 1 active mode:
0: Positive logic
1: Negative logic
FMR active mode
0: Positive logic
1: Negative logic
☆
: ‘Positive logic’ means that, DO output terminal is normally the default state.
‘Negative logic’ means the opposite situation.
Step 10: Set Startup Frequency If Needed
Startup frequency
active time
Step 11: Set S-Curve If Needed
Acceleration/
Deceleration mode
0: Linear mode
1: S-curve mode A
2: S-curve mode B
Time proportion of
S-curve start segment
0.0 to [100.0 minus F6-09]
Time proportion of
S-curve end segment
0.0 to [100.0 minus F6-08]

Step 12: Set DC Injection Braking/ Pre-Excitation If Needed
0: Direct start
1: Reserved
2: Pre-excited start
DC Injection Braking 1
level
DC Injection Braking 1
active time
DC Injection Braking 2
frequency threshold
0.00 to maximum frequency
DC Injection Braking 2
delay
DC Injection Braking 2
level
DC Injection Braking 2
active time
☆
: Only when F6-00=0, the Function codes F6-05 and F6-06 are related to DC Injection Braking 1.
0: Direct start
1: Reserved
2: Pre-excited start
Pre-excitation active
time
☆
: Only when F6-00=2, the function codes F6-05 and F6-06 are related to pre-excitation.
Step 13: Set PI Of Velocity Loop If It’s SVC Control Mode
Speed loop
proportional gain 1
Speed loop integral
time 1
Speed loop
proportional gain 2
Speed loop integral
time 2

CHA P TER 4 TROUBLE SHOOTING
4. 1 Faults And Solutions
Overcurrent
during
acceleration
1. The output circuit is short circuited.
2. The acceleration time is too short.
3. Manual torque boost or V/F curve is not
appropriate.
4. The power supply is too low.
5. The startup operation is performed on the rotating
motor.
6. A sudden load is added during acceleration.
7. The AC drive model is of too small power class.
1: Eliminate short circuit.
2: Increase the acceleration time.
3: Adjust the manual torque boost or V/F curve.
4: Check that the power supply is normal.
5: Select rotational speed tracking restart or start the
motor after it stops.
6: Remove the added load.
7: Select a drive of higher power class.
Overcurrent
during
deceleration
1. The output circuit is short circuited.
2. The deceleration time is too short.
3. The power supply is too low.
4. A sudden load is added during deceleration.
5. The braking resistor is not installed.
1: Eliminate short circuit.
2: Increase the deceleration time.
3: Check the power supply, and ensure it is normal.
4: Remove the added load.
5: Install the braking resistor.
Overcurrent at
constant speed
1. The output circuit is short circuited.
2. The power supply is too low.
3. A sudden load is added during operation.
4. The AC drive model is of too small power class.
1: Eliminate short circuit.
2: Adjust power supply to normal range.
3: Remove the added load.
4: Select a drive of higher power class.
Overvoltage
during
acceleration
1. The DC bus voltage is too high☆.
2. An external force drives the motor during
acceleration.
3. The acceleration time is too short.
4. The braking resistor is not installed.
1: Replace with a proper braking resistor.
2: Cancel the external force or install a braking
resistor.
3: Increase the acceleration time.
4: Install a braking resistor.
Overvoltage
during
deceleration
1. The DC bus voltage is too high☆.
2. An external force drives the motor during
deceleration.
3. The deceleration time is too short.
4. The braking resistor is not installed.
1: Replace with a proper braking resistor.
2: Cancel the external force or install braking resistor.
3: Increase the deceleration time.
4: Install the braking resistor
Overvoltage at
constant speed
1. The DC bus voltage is too high☆.
2. An external force drives the motor during
deceleration.
1: Replace with a proper braking resistor.
2: Cancel the external force.
Braking Unit Operation Level

The input voltage exceeds the allowed range.
Adjust the input voltage to within the allowed range.
1. Instantaneous power failure occurs.
2. The input voltage exceeds the allowed range
3. The DC bus voltage is too low☆.
4. The rectifier bridge and buffer resistor are faulty.
5. The drive board is faulty.
6. The control board is faulty.
1: Reset the fault.
2: Adjust the input voltage to within the allowed range.
3 to 6: Seek for maintenance.
1. The load is too heavy or the rotor is locked.
2. The drive is of too small power class.
1: Reduce the load, or check the motor, or check the
machine whether it is locking the rotor.
2: Select a drive of higher power class.
1. F9-01 is too small.
2. The load is too heavy or the rotor is locked.
3. The drive is of too small power class.
1: Set F9-01 correctly.
2: Reduce the load, or check the motor, or check the
machine whether it is locking the rotor.
3: Select a drive of larger power class.
1. The three-phase power supply is abnormal.
2. The drive board is faulty.
3. The lightening protection board is faulty.
4. The control board is faulty.
1: Check the power supply.
2 to 4: Seek for maintenance.
1. The cable between drive and motor is faulty.
2. The drive's three-phase output is unbalanced
when the motor is running.
3. The drive board is faulty
4. The IGBT is faulty.
1: Check the cable.
2: Check the motor windings.
3 to 4: Seek for maintenance.
1. The ambient temperature is too high.
2. The air filter is blocked.
3. The cooling fan is damaged.
4. The thermal sensor of IGBT is damaged.
5.The IGBT is damaged.
1: Reduce the ambient temperature.
2: Clean the air filter.
3 to 5: Seek for maintenance.
1. External fault signal is input via DI.
2. External fault signal is input via VDI.
1. The host computer is abnormal.
2. The communication cable is faulty.
3. The extension card type set in F0-28 is incorrect.
4. The communication parameters in group FD are
set improperly.
1: Check cabling of the host computer.
2: Check the communication cabling.
3: Set F0-28 correctly.
3: Set the communication parameters properly.
The drive board is faulty.
1. Motor parameters are wrong.
2. Motor tuning overtime.
1. Check motor parameters F1-00 to F1-05.
2. Check the wiring between drive and motor.
The EEPROM chip is damaged.
Replace the main control board.
The motor is short-circuited to ground.
Replace the cables or motor.
Accumulative
running time
reached
The accumulative running time reaches the setting of
F8-17.
Clear the record by performing parameter initialization
(set FP-01 to 2).
1. The user-defined fault 1 signal is input via DI.
2. User-defined fault 1 signal is input via VDI.

1. The user-defined fault 2 signal is input via DI
2. The user-defined fault 2 signal is input via VDI.
Accumulative
power-on time
reached
The accumulative power-on time reaches the setting
of F8-16.
Clear the record by performing parameter initialization
(set FP-01 to 2).
Offload when it’s running.
Check the connection between motor and load.
PID feedback
lost during
running
The PID feedback is lower than FA-26.
Check the PID feedback signal or set FA-26 to a
proper value.
1. The load is too heavy or the rotor is locked.
2. The drive is of too small power class.
1: Reduce the load, or check the motor, or check the
machine whether it is locking the rotor.
2: Select a drive of higher power class.
Motor
switchover fault
during running
The current motor is switched over via a terminal
during running of the AC drive.
Switch over the motor only after the AC drive stops.

4. 2 Common Symptoms And Diagnostics
There is no display at
power-on.
1. There is no power supply or the power supply is
too low.
2. The switching power supply on the drive board is
faulty.
3. The rectifier bridge is damaged.
4. The buffer resistor of the drive is damaged.
5. The control board or the keypad is faulty.
6. The cable between the control board and the drive
board or keypad breaks.
1: Check the power supply.
2 to 5: Seek for maintenance.
6: Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
"HC" is displayed at
power-on.
1. The cable between the drive board and the control
board is in poor contact.
2. The control board is damaged.
3. The motor winding or the motor cable is
short-circuited to the ground.
4. The power supply is too low.
1: Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
2: Seek for maintenance.
3: Check the motor or replace it, and check the motor
cable.
4. Check the power supply according to charpter1.3.
The display is normal upon
power-on, but "HC" is
displayed after after
startup and the motor
stops immediately.
1. The cooling fan is damaged or the rotor is locked.
2. A certain terminal is short-circuited.
1: Replace cooling fan, or check the machine whether
it is locking the rotor.
2: Eliminate short circuit.
Err14 is reported
frequently.
1. The carrier frequency is set too high.
2. The cooling fan is damaged, or the air filter is
blocked.
3. Components (thermal coupler or others) inside the
drive are damaged.
1: Reduce F0-15.
2: Replace the fan and clean the air filter.
3: Seek for maintenance.
The motor does not rotate
after the AC drive outputs
a non-zero reference.
1. The motor or motor cable is damaged.
2. The motor parameters are set improperly.
3. The cable between the drive board and the control
board is in poor contact.
4. The drive board is faulty.
5. The rotor is locked.
1: Check the motor, or check the cable between the
drive and the motor.
2: Check and re-set motor parameters.
3: Re-connect the 4-core and 28-core flat cables, or
seek for maintenance.
4: Seek for maintenance.
5: Check the machine whether it is locking the rotor.
The DI terminals are
disabled.
1. The DI parameters are set incorrectly.
2. The input signal is incorrect.
3. The wire jumper between OP and +24V is in poor
contact.
4. The control board is faulty.
1: Check and reset DI parameters in group F4.
2: Check the input signals, or check the input cable.
3: Check the jumper between OP and +24 V.
4: Seek for maintenance.
The drive reports
overcurrent and
overvoltage frequently.
1. The motor parameters are set improperly.
2. The acceleration/deceleration time is too small.
3. The load fluctuates.
1: Reset motor parameters.
2: Set proper acceleration/deceleration time.
3: Check the machine, or seek for maintenance.

CHA P TER 5 FUNCTION CODE TABLE
5. 1 General Function Codes
Group F0: Standard
0: Sensorless vector control (SVC)
2: Voltage/Frequency control (V/F)
Main frequency source
X selection
Auxiliary frequency
source Y selection
The same as F0-03 (Main frequency source X
selection)
Range of auxiliary
frequency Y for X and
Y operation
0: Relative to maximum frequency
1: Relative to main frequency X
Range of auxiliary
frequency Y for X and
Y operation
Frequency source
selection
0.00 to maximum frequency (F0-10)
0: Same direction
1: Reverse direction
Source of frequency
upper limit
Frequency lower limit (F0-14) to maximum
frequency (F0-10)
Frequency upper limit
offset
0.00 to maximum frequency (F0-10)
0.00 to frequency upper limit (F0-12)
Carrier frequency
adjustment with
temperature
0.00 to 650.00(if F0-19=2)
0.0 to 6500.0 (if F0-19=1)
0 to 65000 (if F0-19=0)
0.00 to 650.00(if F0-19=2)
0.0 to 6500.0 (if F0-19=1)
0 to 65000 (if F0-19=0)
Acceleration/Decelerat
ion time unit
Frequency offset of
auxiliary frequency
source for X and Y
operation
0.00 to maximum frequency (F0-10)
Frequency reference
resolution
Retentive of digital
setting frequency upon
power failure
0: Not retentive
1: Retentive
Acceleration/Decelerat
ion time base
frequency
0: Maximum frequency (F0-10)
1: Frequency reference
2: 100
Base frequency for
UP/DOWN modification
during running
0: Running frequency
1: Frequency reference
Binding command source
to frequency source

Group F1: Motor 1 Parameters
0: Common asynchronous motor
1: Variable frequency asynchronous motor
Rated motor rotational
speed
Stator resistance
(asynchronous motor)
Leakage inductive
reactance
Mutual inductive
reactance
No-load current
(asynchronous motor)
0: No auto-tuning
1: Static auto-tuning
2: Complete dynamic auto-tuning
Group F2: Vector Control
Speed loop
proportional gain 1
Speed loop integral
time 1
Speed loop
proportional gain 2
Speed loop integral
time 2
Time constant of
speed loop filter
Vector control
over-excitation gain
Torque upper limit
source in speed
control mode
Digital setting of torque
upper limit in speed
control mode
Excitation adjustment
proportional gain
Excitation adjustment
integral gain
Torque adjustment
proportional gain
Torque adjustment
integral gain

Cut-off frequency of
torque boost
0.00 to maximum output frequency
Multi-point V/F
frequency 1 (F1)
Multi-point V/F voltage
1 (V1)
Multi-point V/F
frequency 2 (F2)
Multi-point V/F voltage
2 (V2)
Multi-point V/F
frequency 3 (F3)
F3-05 to rated motor frequency (F1-04)
Multi-point V/F voltage
3 (V3)
V/F slip compensation
gain
V/F oscillation
suppression gain
Voltage source for V/F
separation
Voltage digital setting
for V/F separation
Voltage rise time of
V/F separation

Group F4: Input Terminals
Terminal wiring mode
selection
0: Two-wire mode 1
1: Two-wire mode 2
2: Three-wire mode 1
3: Three-wire mode 2
Corresponding setting
of AI curve1 minimum
input
Corresponding setting
of AI curve1 maximum
input
Corresponding setting
of AI curve2 minimum
input
Corresponding setting
of AI curve2 maximum
input
Corresponding setting
of AI curve3 minimum
input
Corresponding setting
of AI curve3 maximum
input
Corresponding setting
of pulse minimum
input

Corresponding setting
of pulse maximum
input
Setting for AI less than
minimum input
DI active mode
selection 1
DI active mode
selection 2
Group F5: Output Terminals
FMR function
(open-collector output
terminal) selection
Relay function
(T/A-T/B-T/C)
selection
Extension card relay
function (P/A-P/B-P/C)
selection
DO1 function selection
(open-collector output
terminal)
Extension card DO2
function selection
Maximum FMP output
frequency
AO2 zero offset
coefficient
Relay 1 output delay
time
Relay 2 output delay
time

Group F6: Start/Stop Control
0: Direct start
2: Pre-excited start (asynchronous motor)
Startup frequency
active time
DC injection braking 1
level/
Pre-excitation level
DC Injection Braking 1
active time/
Pre-excitation active
time
Acceleration/
Deceleration mode
0: Linear mode
1: S-curve mode A
2: S-curve mode B
Time proportion of
S-curve starting
segment
0.0 to (100.0 minus F6-09)
Time proportion of
S-curve ending
segment
0.0 to (100.0 minus F6-08)
0: Decelerate to stop
1: Coast to stop
DC Injection Braking 2
frequency threshold
0.00 to maximum frequency
DC Injection Braking 2
delay time
DC Injection Braking 2
level
DC Injection Braking 2
active time
Group F7: Keypad Control And LED Display
MF.K Key function
selection
LED display running
parameters 1
LED display running
parameters 2
LED display stop
parameters
Load speed display
coefficient
Accumulative running
time
Number of decimal
places for load speed
display
0: 0 decimal place
1: 1 decimal place
2: 2 decimal places
3: 3 decimal places
Accumulative
power-on time
Accumulative power
consumption

Group F8: Auxiliary Functions
0.00 to maximum frequency
0.00 to maximum frequency
0.00 to maximum frequency
0.00 to maximum frequency
Forward/Reverse
rotation dead-zone
time
Running mode when
frequency reference
lower than frequency
lower limit
0: Run at frequency lower limit
1: Stop
2: Run at zero speed
Accumulative
power-on time
threshold
Accumulative running
time threshold
Frequency detection
value (FDT1)
0.00 to maximum frequency
Frequency detection
hysteresis
(FDT1hysteresis )
0.0 to 100.0 (FDT1 level)
Detection range of
frequency reached
0.00 to 100 (maximum frequency)
Jump frequency during
acceleration/decelerati
on
Frequency switchover
point between
acceleration time 1
and acceleration time
2
0.00 to maximum frequency
Frequency switchover
point between
deceleration time 1
and deceleration time
2
0.00 to maximum frequency
Frequency detection
value (FDT2)
0.00 to maximum frequency

Frequency detection
hysteresis (FDT2
hysteresis )
0.0 to 100.0 (FDT2 level)
Any frequency
reaching detection
value 1
0.00 to maximum frequency
Any frequency
reaching detection
amplitude 1
0.0 to 100.0 (maximum frequency)
Any frequency
reaching detection
value 2
0.00 to maximum frequency
Any frequency
reaching detection
amplitude 2
0.0 to 100.0 (maximum frequency)
Zero current detection
level
0.0 to 300.0
(rated motor current as 100%)
Zero current detection
delay
Output overcurrent
threshold
0.0 (no detection)
0.1 to 300.0 (rated motor current)
Output overcurrent
detection delay time
0.0 to 300.0 (rated motor current)
Any current reaching 1
amplitude
0.0 to 300.0 (rated motor current)
0.0 to 300.0 (rated motor current)
Any current reaching 2
amplitude
0.0 to 300.0 (rated motor current)
AI1 input voltage lower
limit
AI1 input voltage
upper limit
Module temperature
threshold
0: Fan working during running
1: Fan working continuously
Dormant frequency (F8-51) to maximum
frequency (F0-10)
0.00 to wakeup frequency (F8-49)
Current running time
reached

Group F9: Fault And Protection
Motor overload
protection selection
Motor overload
protection gain
Motor overload
warning coefficient
Overvoltage stall
protective voltage
Overcurrent stall
protective current
Short-circuit to ground
upon power-on
DO action during fault
auto reset
Time interval of fault
auto reset
Input phase loss
protection selection
Output phase loss
protection selection
Bus voltage upon 3rd
fault
Output terminal status
upon 3rd fault
AC drive status upon
3rd fault
Power-on time upon
3rd fault
Running time upon 3rd
fault
Bus voltage upon 2nd
fault
Output terminal status
upon 2nd fault
Bus voltage upon 2nd
fault
Output terminal status
upon 1st fault

Bus voltage upon 3rd
fault
Output terminal status
upon 1st fault
Fault protection action
selection 1
Fault protection action
selection 2
Fault protection action
selection 3
Frequency selection
for continuing to run
upon fault
Backup frequency
upon abnormality
0.0 to 100.0 (maximum frequency)
Action selection at
instantaneous power
failure
0: Invalid
1: Decelerate
2: Decelerate to stop
Action pause judging
voltage at
instantaneous power
failure
Voltage rally judging
time at instantaneous
power failure
Action judging voltage
at instantaneous
power failure
60.0 to 100.0 (standard bus voltage)
Protection upon load
becoming 0

Group FA: Process Control And PID Function
0: Forward action
1: Reverse action
PID setting feedback
range
Cut-off frequency of
PID reverse rotation
0.00 to maximum frequency
PID parameter
switchover condition
PID parameter
switchover deviation 1
PID parameter
switchover deviation 2
PID initial value
holding time
Maximum deviation
between two PID
outputs in forward
direction
Maximum deviation
between two PID
outputs in reverse
direction
Detection value of PID
feedback loss
0.0: Not judging feedback loss
0.1 to 100.0
Detection time of PID
feedback loss
0: No PID operation at stop
1: PID operation at stop

Group FB: Swing Frequency, Fixed Length And Count
Swing frequency
setting mode
0: Relative to the central frequency
1: Relative to the maximum frequency
Swing frequency
amplitude
Triangular wave rising
time coefficient
Number of pulses per
meter

Group FC: Multi-Reference And Simple PLC Function
Simple PLC retentive
selection
Running time of simple
PLC reference 0
Acceleration/decelerati
on time of simple PLC
reference 0
Running time of simple
PLC reference 1
Acceleration/decelerati
on time of simple PLC
reference 1
Running time of simple
PLC reference 2
Acceleration/decelerati
on time of simple PLC
reference 2
Running time of simple
PLC reference 3
Acceleration/decelerati
on time of simple PLC
reference 3
Running time of simple
PLC reference 4
Acceleration/decelerati
on time of simple PLC
reference 4
Running time of simple
PLC reference 5
Acceleration/decelerati
on time of simple PLC
reference 5
Running time of simple
PLC reference 6

Acceleration/decelerati
on time of simple PLC
reference 6
Running time of simple
PLC reference 7
Acceleration/decelerati
on time of simple PLC
reference 7
Running time of simple
PLC reference 8
Acceleration/decelerati
on time of simple PLC
reference 8
Running time of simple
PLC reference 9
Acceleration/decelerati
on time of simple PLC
reference 9
Running time of simple
PLC reference 10
Acceleration/decelerati
on time of simple PLC
reference 10
Running time of simple
PLC reference 11
Acceleration/decelerati
on time of simple PLC
reference 11
Running time of simple
PLC reference 12
Acceleration/decelerati
on time of simple PLC
reference 12
Running time of simple
PLC reference 13
Acceleration/decelerati
on time of simple PLC
reference 13
Running time of simple
PLC reference 14
Acceleration/decelerati
on time of simple PLC
reference 14
Running time of simple
PLC reference 15
Acceleration/decelerati
on time of simple PLC
reference 15
Time unit of simple
PLC running
0: s (second);
1: h (hour)

Group FD: Communication
0: Broadcast address;
1 to 247
0.0 (invalid);
0.1 to 60.0
Modbus protocol
selection
Current unit in
communication

Group FE: User-Defined Function Code
User-defined function
code 0
F0-00 to FP-xx,
A1-00 to Ax-xx,
U0-xx to U0-xx
User-defined function
code 1
User-defined function
code 2
User-defined function
code 3
User-defined function
code 4
User-defined function
code 5
User-defined function
code 6
User-defined function
code 7
User-defined function
code 8
User-defined function
code 9
User-defined function
code 10
User-defined function
code 11
User-defined function
code 12
User-defined function
code 13
User-defined function
code 14
User-defined function
code 15
User-defined function
code 16
User-defined function
code 17
User-defined function
code 18
User-defined function
code 19
User-defined function
code 20
User-defined function
code 21
User-defined function
code 22
User-defined function
code 23
User-defined function
code 24
User-defined function
code 25
User-defined function
code 26
User-defined function
code 27
User-defined function
code 28

User-defined function
code 29
Group FP: Function Code Management
0: No operation
01: Restore factory settings except motor
parameters
02: Clear records
04: Restore user backup parameters
501: Back up current user parameters
AC drive parameter
display property
Individualized
parameter display
property
Parameter
modification property
0: Modifiable
1: Not modifiable
Group A0: Torque Control
Speed/Torque control
selection
0: Speed control
1: Torque control
Torque setting source
in torque control
Torque digital setting
in torque control
Forward maximum
frequency in torque
control
0.00 to maximum frequency (F0-10)
Reverse maximum
frequency in torque
control
0.00 to maximum frequency (F0-10)
Acceleration time in
torque control
Deceleration time in
torque control

Group A1: Virtual DI/DO
Function selection for
AI1 used as DI
Function selection for
AI2 used as DI
Function selection for
AI3 used as DI
State selection for AI
used as DI

Group A2: Motor 2 Parameters
0: Common asynchronous motor
1: Variable frequency asynchronous motor
0.01 to maximum frequency
Rated motor rotational
speed
Leakage inductive
reactance
Mutual inductive
reactance
0: No auto-tuning
1: Static auto-tuning
2: Complete auto-tuning
Speed loop
proportional gain 1
Speed loop integral
time 1
Speed loop
proportional gain 2
Speed loop integral
time 2
A2-40 to maximum output frequency
Time constant of
speed loop filter
Vector control
over-excitation gain
Torque upper limit
source in speed
control mode
Digital setting of torque
upper limit in speed
control mode
Excitation adjustment
proportional gain
Excitation adjustment
integral gain
Torque adjustment
proportional gain
Torque adjustment
integral gain

0: Sensorless vector control (SVC )
2: Voltage/Frequency (V/F) control
Motor 2
acceleration/decelerati
on time
0: Same as motor 1
1: Acceleration/Deceleration time 1
2: Acceleration/Deceleration time 2
3: Acceleration/Deceleration time 3
4: Acceleration/Deceleration time 4
0.0: Fixed torque boost,
0.1 to 30
Motor 2 oscillation
suppression gain

Group A3: Motor 3 Parameters
0: Common asynchronous motor
1: Variable frequency asynchronous motor
0.01 to maximum frequency
Rated motor rotational
speed
Leakage inductive
reactance
Mutual inductive
reactance
0: No auto-tuning
1: Static auto-tuning
2: Complete auto-tuning
Speed loop
proportional gain 1
Speed loop integral
time 1
Speed loop
proportional gain 2
Speed loop integral
time 2
A3- 40 to maximum output frequency
Time constant of
speed loop filter
Vector control
over-excitation gain
Torque upper limit
source in speed
control mode
Digital setting of torque
upper limit in speed
control mode
Excitation adjustment
proportional gain
Excitation adjustment
integral gain
Torque adjustment
proportional gain
Torque adjustment
integral gain

0: Sensorless vector control (SVC )
2: Voltage/Frequency (V/F) control
Motor 2
acceleration/decelerati
on time
0: Same as motor 1
1: Acceleration/Deceleration time 1
2: Acceleration/Deceleration time 2
3: Acceleration/Deceleration time 3
4: Acceleration/Deceleration time 4
0.0: Fixed torque boost,
0.1 to 30
Motor 2 oscillation
suppression gain

Group A4: Motor 4 Parameters
0: Common asynchronous motor
1: Variable frequency asynchronous motor
0.01 to maximum frequency
Rated motor rotational
speed
Leakage inductive
reactance
Mutual inductive
reactance
0: No auto-tuning
1: Static auto-tuning
2: Complete auto-tuning
Speed loop
proportional gain 1
Speed loop integral
time 1
Speed loop
proportional gain 2
Speed loop integral
time 2
A4- 40 to maximum output frequency
Time constant of
speed loop filter
Vector control
over-excitation gain
Torque upper limit
source in speed
control mode
Digital setting of torque
upper limit in speed
control mode
Excitation adjustment
proportional gain
Excitation adjustment
integral gain
Torque adjustment
proportional gain
Torque adjustment
integral gain

0: Sensorless vector control (SVC )
2: Voltage/Frequency (V/F) control
Motor 2
acceleration/decelerati
on time
0: Same as motor 1
1: Acceleration/Deceleration time 1
2: Acceleration/Deceleration time 2
3: Acceleration/Deceleration time 3
4: Acceleration/Deceleration time 4
0.0: Fixed torque boost,
0.1 to 30
Motor 2 oscillation
suppression gain
Group A5: Control Optimization
DPWM switchover
frequency upper limit
0: Asynchronous modulation
1: Synchronous modulation
Dead zone
compensation mode
selection
0: No compensation
1: Compensation
Dead-zone time
adjustment

Group A6: AI Curve Setting
Corresponding setting
of AI curve 4 minimum
input
AI curve 4 inflexion 1
input
Corresponding setting
of AI curve 4 inflexion
1 input
AI curve 4 inflexion 1
input
Corresponding setting
of AI curve 4 inflexion
1 input
Corresponding setting
of AI curve 4 maximum
input
Corresponding setting
of AI curve 5 minimum
input
AI curve 5 inflexion 1
input
Corresponding setting
of AI curve 5 inflexion
1 input
AI curve 5 inflexion 1
input
Corresponding setting
of AI curve 5 inflexion
1 input
Corresponding setting
of AI curve 5 maximum
input
Jump point of AI1 input
corresponding setting
Jump amplitude of AI1
input corresponding
setting
Jump point of AI2 input
corresponding setting
Jump amplitude of AI2
input corresponding
setting
Jump point of AI3 input
corresponding setting
Jump amplitude of AI3
input corresponding
setting

Group AC: AI/AO Correction

5. 2 Monitoring Function Codes
Group U0: Monitoring
AI1 voltage before
correction
AI2 voltage before
correction
AI3 voltage before
correction
Accumulative
power-on time
Accumulative running
time
Communication setting
value
Viewing any register
address value

DI function state visual
display 1
DI function state visual
display 2
Current frequency
reference
Current running
frequency