Meanwell VFD Series User manual

VFD Series
High efficiency Lightweight Intelligent
Bidirectional Power Supply
Installation manual

The VFD series is a three-phase motor drive module that can be
used in combination with an external motor control circuit. The
product family covers AC or DC input models and two mechanical
design including chassis type and PCB type for different
installation requirement. They are suitable for three-phase
motors (BLDC, induction motors, synchronous reluctance motor)
applications such as fans, water pumps, automatic doors, air
conditioners, conveyor belts, and fitness equipment, etc.

Table of contents
1.Safety Precautions
2.Product Introduction
21.Model Encoding
2.2 Product Features
23.Electrical Specification Sheet
24.Derating Curves
25.Mechanical Drawings
3.Installation Instructions
3.1 Installation Precautions
3.2 Installation Steps
.33Configuration Examples
4.Interface Description
4.1 Connector Function Description
42.Control Pin Definition
5.Function Description
5.1 Three-phase, Six-switch IGBT Control
Setting
52.Three-phase Current Detection and
Over-current Protection
53.DC Bus Voltage Detection
.54IGBT Temperature Monitoring
.55Driver Error Alarm
6.Abnormal Conditions and Troubleshooting
7.Warranty
1
2
2
2
3
6
9
11
11
11
11
15
15
16
17
17
17
18
19
20
21
22
2023 12 Ver 0.2023 12 Ver 0.

1
1.Safety Precautions
1
nTurn off the power supply before installation or wiring.
nThe output voltage is up to , do not touch it during operation.220VAC
nThe product can still hold an high voltage after turning off the power
supply. Do not touch any parts on the product immediately to avoid
danger. You can wait for minute or take the initiative to unload the1
residual energy in the bulk capacitor before any further setting.
nThe output AC terminal UVW cannot be connected to the AC power
supply source.
nThis product is used for three-phase motor loads and cannot be
configured with single-phase motors or used for other purposes.
nOnly qualified professional technician can install, wire, repair and
perform maintenance to the driver.
nThe product is non-isolated type. When connecting the functional
connector, please note that the AC FG power supply for external signals
should be removed or properly isolated to avoid damage.
nDo not put in or out the motor during operation to avoid overcurrent
tripping or damage to the driver.
2
2.Product introduction
2.1 Model Encoding
wattage series name
Rated
Appearance : C: Metal case; P: PCB type
Input rated voltage
230VFD - -350
2.2 Product Features
2
lMultiple installation options: Chassis type / PCB type
lAC and DC input voltage options :
AC input type (built-in PFC function) : 90~264Vac
DC input type : 20~55Vdc
lFanless design for no noise and long product life cycle
lCan be controlled with external controller
lHigh surge current 200% up to 5 seconds
lEquipped with basic protection functions: short circuit and
overcurrent protection
lProvided multiple sensors for external control:
Current sensor: can be used in motor torque control DC bus
voltage sensor: can be used for over under voltage protection/
lTemperature sensor: can be used for over-temperature protection
l-30~+70 ℃ wide operating temperature range
lSuitable for three-phase motor load applications
(//brushless DC motor induction motor synchronous reluctance
motor )...
l3 years warranty

3
2.3 Electrical Specification Sheet
2
OUTPUT
INPUT
MODEL NO.
COOLING SYSTEM
WORKING HUMIDITY
WORKING TEMP.
STORAGE TEMP., HUMIDITY
VIBRATION
RATED INPUT VOLTAGE
MAX. CURRENT
CURRENT
RATED POWER
EFFICIENCY
VOLTAGE RANGE(UVW)
RATED INPUT CURRENT
SHORT CIRCUIT
PROTECTION
ENVIRONMENT
SWITCHING FREQUENCY
RANGE
OUTPUT
FREQUENCY
INVERTER PWM INPUT
AUXILIARY POWER VCC
FAULT SIGNAL
DC BUS VOLTAGE SENSOR
FUNCTION
THREE PHASE CURRENT
SENSOR
THERMAL SENSOR
SAFETY STANDARDS
SAFETY &
EMC
EMC IMMUNITY
EMC EMISSION
DIMENSION (L*W*H)
OTHERS PACKING
VFD-150P-48 VFD-250P-48 VFD-350P-48
Three phase 0~34V, suit for 48V class motorline-to-line
8.6A
150W
4.3A
93%
20 ~ 55VDC
3.5A /48VDC Typ.
Protection type : Shut down o/p voltage, re-power on to recover
2.5KHz ~ 15KHz
PWM control signal input for driving inverter IGBTs. (PIN8~13 of CN93)
IGBT ON: High(>2.6V); IGBT OFF: Low(<0.8V)TTL input :
Inverter fault signal(Short circuit/OCP, PIN7 of CN93).
TTL input: Normal: High(> V); Abnormal: Low(<0.5V)3
DC BUS voltage sensor output(HV+ sensor, PIN1 of CN9 V348): 2.5V@DC BUS
Built-in m low-side shunt resisor (each phase),6 (PIN4~6 of CN93)Ω
Non-isolated 15V output power for user’s application. Max current : 0.2A, Ripple:1V
Built-n 10 IGBTs operating temperature.K sensingNTC forΩ
(TSM2A103F34D1R (Thinking Electronic), 3PIN2 of CN9 )
Compliance to EN61800-3 C2
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, EN61000-2-4, EN60146-1-1, EN61000-2-1
Air convection
20 ~ 90% RH non-condensing
-30 ~ +70 (Refer to “Dreating Curve”)℃
-40 ~ +85 , 10 ~ 95% RH non-condensing℃
Design refer to EN61800-5
101.6*50.8*28.6mm
0.09kg
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
14.4A
250W
7.2A
93%
5.6A /48VDC Typ.
20A
350W
10A
92.5%
8.5A /48VDC Typ.
0.09kg 0.1kg
DC Input PCB Type (for 48V Motor)
4
2
OUTPUT
MODEL NO.
CURRENT
POWER
VOLTAGE RANGE(UVW)
VFD-250P-230 VFD-350P-230
Three phase 0~ V, suit for V class motorline-to-line 240 200-240
250W
1A
350W
1.4A
INPUT
COOLING SYSTEM
WORKING HUMIDITY
WORKING TEMP.
STORAGE TEMP., HUMIDITY
VIBRATION
PEAK CURRENT
EFFICIENCY
SHORT CIRCUIT
PROTECTION
ENVIRONMENT
SWITCHING FREQUENCY RANGE
OUTPUT
FREQUENCY
INVERTER PWM INPUT
AUXILIARY POWER VCC
FAULT SIGNAL
DC BUS VOLTAGE SENSOR
FUNCTION
THREE PHASE CURRENT SENSOR
THERMAL SENSOR
SAFETY STANDARDS
SAFETY &
EMC
EMC IMMUNITY
EMC EMISSION
DIMENSION (L*W*H)
OTHERS PACKING
2A
91.5%
Air convection
20 ~ 90% RH non-condensing
-30 ~ +70 (Refer to “Dreating Curve”)℃
-40 ~ +85 , 10 ~ 95% RH non-condensing℃
Design refer to EN61800-5
0.26kg
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
2.8A
93%
0.27kg
CONCECTION
15CFM
CONCECTION
15CFM
1.6A 2.2A
400W 550W
RATED INPUT VOLTAGE
DC BUS VOLTAGE
INPUT FREQUENCY RANGE (Hz)
POWER FACTOR (Typ.)
RATED INPUT CURRENT
INRUSH CURRENT
380 5VDC±
90 ~ 264VAC
47 ~ 63Hz
PF>0.99/115VAC, PF>0.93/230VAC
2.6A /115VAC 1.3A/230VAC
Cold start 70A
PWM control signal input for driving inverter IGBTs. (PIN8~13 of CN93)
IGBT ON: High(>2.6V); IGBT OFF: Low(<0.8V)TTL input :
Inverter fault signal(Short circuit/OCP, PIN7 of CN93).
TTL input: Normal: High(> V); Abnormal: Low(<0.5V)3
DC BUS voltage sensor output(HV+ sensor, PIN1 of CN93): 2.5V@DC BUS 380V
Protection type : Shut down o/p voltage, re-power on to recover
2.5KHz ~ 15KHz
Built-in 0m low-side shunt resisor (each phase),10 Ω(PIN4~6 of CN93)
Non-isolated 15V output power for user’s application. Max current : 0.1A, Ripple:1V
Built- n 10 NTC for IGBTs operating temperature.i K sensingΩ
(TSM2A103F34D1R (Thinking Electronic), PIN2 of CN93)
127*76.2*35mm
Compliance to EN61800-3 C2, BS EN/EN61000-3-2,-3
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, EN61000-2-4, EN60146-1-1, EN61000-2-1
I/P-FG:100M Ohms/500VDC/25 / 70%RH℃
WITHSTAND VOLTAGE
ISOLATION RESISTANCE
I/P-FG:2KVAC
PF>0.99/115VAC, PF>0.93/230VAC
3.5A /115VAC 2A/230VAC
AC Input PCB Type (for 230V Motor)

5
2
OUTPUT
MODEL NO.
MAX. CURRENT
CURRENT
RATED POWER
EFFICIENCY
VOLTAGE RANGE(UVW)
VFD-200C-230 VFD-350C-230 VFD-750C-230
Three phase 0~ V, suit for - V class motorline-to-line 240 200 240
1.6A
200W
0.8A
92%
2.5KHz ~ 15KHz
Compliance to EN61800-3 C2, BS EN/EN61000-3-2,-3
Compliance to EN61800-3
Air convection
20 ~ 90% RH non-condensing
-30 ~ +70 (Refer to “Dreating Curve”)℃
-40 ~ +85 , 10 ~ 95% RH non-condensing℃
Design refer to EN61800-5
146*55*26mm
0.31kg
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
2.8A
350W
1.4A
93%
6A
750W
3A
93%
0.38kg 0.8kg
INPUT
COOLING SYSTEM
WORKING HUMIDITY
WORKING TEMP.
STORAGE TEMP., HUMIDITY
VIBRATION
SHORT CIRCUIT
PROTECTION
ENVIRONMENT
SWITCHING FREQUENCY
RANGE
OUTPUT
FREQUENCY
INVERTER PWM INPUT
AUXILIARY POWER VCC
FAULT SIGNAL
DC BUS VOLTAGE SENSOR
FUNCTION
THREE PHASE CURRENT
SENSOR
THERMAL SENSOR
SAFETY STANDARDS
SAFETY &
EMC
EMC IMMUNITY
EMC EMISSION
DIMENSION (L*W*H)
OTHERS PACKING
RATED INPUT VOLTAGE
DC BUS VOLTAGE
INPUT FREQUENCY RANGE (Hz)
POWER FACTOR (Typ.)
RATED INPUT CURRENT
INRUSH CURRENT
380 5VDC±
90 ~ 264VAC
47 ~ 63Hz
PF>0.99/115VAC,
PF>0.93/230VAC
2.6A /115VAC 1.1A/230VAC
Cold start 50A
PWM control signal input for driving inverter IGBTs. (PIN8~13 of CN93)
IGBT ON: High(>2.6V); IGBT OFF: Low(<0.8V)TTL input :
Inverter fault signal(Short circuit/OCP, PIN7 of CN93).
TTL input: Normal: High(> V); Abnormal: Low(<0.5V)3
DC BUS voltage sensor output(HV+ sensor, PIN1 of CN93): 2.5V@DC BUS 380V
Protection type : Shut down o/p voltage, re-power on to recover
Built-in 0m low-side shunt resisor (each phase),10 Ω(PIN4~6 of CN93)
Non-isolated 15V output power for user’s application. Max current : 0.1A, Ripple:1V
Built- n 10 NTC for IGBTs operating temperature.i K sensingΩ
(TSM2A103F34D1R (Thinking Electronic), PIN2 of CN93)
I/P-FG:100M Ohms/500VDC/25 / 70%RH℃
WITHSTAND VOLTAGE
ISOLATION RESISTANCE
I/P-FG:2KVAC
PF>0.99/115VAC,
PF>0.93/230VAC
3.5A /115VAC 2A/230VAC
PF>0.99/115VAC,
PF>0.93/230VAC
8A /115VAC 4A/230VAC
146*62*31mm 150*100*41mm
AC Input Chassis Type (for 230V Motor)
6
2.4 Derating Curves
2
Derating Curve vs Ambient Temperature (PCB Type)
AMBIENT TEMPERATURE( )
℃
LOAD (W)
(HORIZONTAL)
-30 0 2010 30 40
175W
6050 70
90W
for 48VDC
75W
45W
for 24VDC
105W
125W
150W
210W
250W
350W
45
for 48VDC
for 24VDC
for 48VDC
for 24VDC
VFD-350P-230
VFD-250P-230
VFD-350P-48
VFD-250P-48
VFD-150P-48

7
2
(HORIZONTAL)
℃
LOAD (%)
-30 0 10 20 30 40 50 60 70
20
30
40
60
80
100
Conduction cooling
or
Forced air cooling
Convection cooling
AMBIENT TEMPERATURE( )
VFD-750C-230
VFD-350C-230
VFD-200C-230
Derating Curve vs Ambient Temperature (Chassis Type)
8
2
INPUT VOLTAGE (VAC) 60Hz
LOAD (%)
90 95 115 120 130 140 160 180 200 220 240 264
60
50
40
VFD-750C-230
VFD-350C-230
VFD-200C-230
VFD-250P/350P-230
with 15CFM Fan
with 23.5CFM Fan
90
100
80
70
85
Output Derating vs Input Voltage
INPUT VOLTAGE (VDC) 60Hz
LOAD (%)
20 24 26 28 30 33 35 37 40 48 50 55
90
100
80
70
60
50
40
VFD-150P/250P/350P-48

9
127
5
66.2
76.2
4- 3.5ψ
1
3
5
1
3
1
3
CN100
CN2
CN1
2
42
4
2
5
5117
1
2
13
14 CN93
FS1
T10A/250V
VFD-250P-230 /VFD-350P-230
35
3 max.
2
2.5 Mechanical Drawings
Unit :mm
4- 3.5ψ
CN1
2
1
FS3
FS2
FS1
T10A/250VAC
VFD-150P-48 /VFD-250P-48/VFD-350P-48
3.175
44.45
28.6
50.8
3 max.
CN93
1
2
13
14
CN2
1
2
3
4
5
6
101.6
3.175 95.25
10
100
13
1
214
113
14
2
CN93
VFD-750C-230
1
2
3
TB1
4 . L=6-ψ4 2
150
143
7.62
6
TB100
1
2
3
4
5
3.5
884
7.62 6
41
2
6
TB1
7.62
26
6
CN100
1
2
3
TB100
1
2
3
3
7.62
4 3.3 L=6-ψ
1
2
3
140
146
6.5
55
42
CN93
13
1
214
113
14
2
VFD-200C-230 /VFD-350C-230

11
U
V
W
PWM_UH
PWM_UL
PWM_VH
PWM_VL
PWM_WH
PWM_WL
ACL
ACN
FG
HV+ sensor
DC+
DC-
HV-
R_U
SH
R_VSH
R_WSH
RTH
GATE
DRIVE
CONTROL
PFC
CIRCUIT
FAULT
IGBT
temperature
sensor
SHORT-
CIRCUIT
PROTECT
EMI FILTER
AUX
POWER
VCC
3.1 Installation Precautions
3.Installation Instructions
3.2 Installation Steps
lDo not use the product in high temperature or high humidity
environment to avoid failure or affecting the lifetime of the VFD
driver product.
lVFD series products are with fan-less design. Pay attention to the
derating curve for the installation environment and operating
power to avoid driver entering protection mode or damaged.
3
3.3 Configuration Examples
lVFD series system block diagram
lSelect appropriate wires to connect the VFD , power supply and
motor load according to the rated current on specification.
lThe terminals must be connected correctly. The wire connecting
between the VFD and motor must follow correct sequence of the
UVW phase to avoid steering errors or operational failures.
AC input type：VFD-250P-230/ VFD-350P-230/ VFD-200C-230/
VFD-350C-230
12
AC input type：VFD-750C-230
3
DC input type：VFD-150P-48/ VFD-250P-48/ VFD-350P-48
U
V
W
ACL
ACN
FG
HV+ sensor
DC+
DC-
HV-
RTH
GATE
DRIVE
CONTROL
PFC
CIRCUIT
FAULT
IGBT
temperature
sensor
SHORT-
CIRCUIT
PROTECT
EMI FILTER
AUX
POWER
VCC
PWM_U
PWM_U
PWM_V
PWM_V
PWM_W
PWM_W
H
H
H
L
L
L
FAULT
U
V
W
U
V
W
I
H
H
H
L
L
L
TRIP
RSH_U
RSH_V
RSH_W
380V
U
V
W
PWM_U
PWM_U
PWM_V
PWM_V
PWM_W
PWM_W
HV+ sensor
DC INPUT+
DC INPUT-
HV-
RSH_U
RSH_V
RSH_W
RTH
GATE
DRIVE
CONTROL
FAULT
IGBT
temperature
sensor
SHORT-
CIRCUIT
PROTECT
AUX
POWER
VCC
H
H
H
L
L
L
H
H
H
L
L
L
U
V
W
U
V
W
I
TRIP
FAULT

13
3
lApplication configuration example (BLDC motor application )
1. The figure below shows a typical configuration of VFD series products
used in BLDC motor drives.
2. Developers can make own design on the external control boards and
use them with the VFD series products to achieve motor control
applications.
3. The external control board should generate 3 phase PWM signal to
the the six-switch on the VFD series (PWM_UH/UL/VH/VL/WH/WL ,
PIN8~13) .
The VFD series provide three-phase current / DC bus voltage /
temperature feedback signals, by means of OPA or voltage divider, for
the external control board to detect the motor behavior and generate
motor control signal.
4. In certain cases, there are position sensors (Hall-effect sensor or
Encoder ... ) in the motor to feedback motor status for controlling. If
you need a control card with sensor input ports, please contact MEAN
WELL for optional control boards.
5. In order to avoid damage to the driver, over-voltage protection should
be provided by the system to avoid damage to the VFD product. The
maximum DC bus voltage is 420V for the AC input models or 60V for
the DC input models .
6. If there is a need for a regenerative braking circuit, connect the
regenerative braking circuit to the DC + and DC - pins to avoid
overvoltage on the driver s DC bus due to motor regenerative power.'
14
3
DC input type：VFD-150P-48/ VFD-250P-48/ VFD-350P-48
AC input type：VFD-250P-230/ VFD-350P-230/ VFD-200C-230/
VFD-350C-230/ VFD-750C-230
Encoder/Hall-effect
VFD Series
(AC in)
U
V
W
L
N
BLDC
motor
HV+ sensor
HV-
R
SH _V
System
load
Shaft
BLDC motor position detection
position sensors
R SH _U
RTH
VCC
FAULT
AC source
90~264V
R SH _W
OPA
Voltage
regulator
5V/ 3.3V
Micro controller
Position Feedback
Circuit
Analog sensor Digital sensor
PWM controller
Digital
sensor External control
Application
FG
PWM_U H
PWM_U L
PWM_V H
PWM_V L
PWM_W H
PWM_W L
DC+ DC-
External regenerative
braking circuit
Digital
control
User Control Board
VFD Series
(DC in)
U
V
W
PWM_UH
PWM_U
L
PWM_VH
PWM_VL
PWM_WH
PWM_WL
DC INPUT+
DC INPUT-
BLDC
motor
HV+ sensor
HV-
R
SH_ V
System
load
Shaft
position sensors
R SH_ U
RTH
VCC
FAULT
DC source
20~55V
R SH_ W
User Control Board
OPA
Voltage
regulator
5V/ 3.3V
Micro controller
Position Feedback
Circuit
Analog sensor Digital sensor
PWM controller
Digital sensor
External control
Application
BLDC motor position detection
Encoder/Hall-effect

15
CN93
1
2
13
14
CN2 CN1
1
2
3
4
5
6
2
1
FS3
FS2
FS1
T10A/250VAC
4.Interface Description
4.1 Connector Function Description
A
B
C
D
Input connection terminals:
Connect the appropriate power supply according to the input
specification (230V or 48V models) .
Three-phase output connection terminals:
Three-phase voltage output terminal, typically connected to
three-phase motors .
DC bus output connection terminals (230 type only):
The DC bus voltage output is used to connect the external
regenerative brake circuit. If required, the 48 type can be
configured directly at the input connection terminals .
CN93 control pin terminals:
Functional/Control pins to be connected to the external control
boards, please refer to Section 5 for more detail .
4
VFD-150P-48/ VFD-250P-48/ VFD-350P-48
A
B
D
B
D
VFD-200C-230/ VFD-350C-230/ VFD-750C-230
CN93
13
1
14
2
A
C
TB1
CN100
1
2
3
TB100
1
2
3
16
CN93
1
2
13
14
CN2 CN1
1
2
3
4
5
6
2
1
FS3
FS2
FS1
T10A/250VAC
4
4.2 Control Pin Definition
CN93
1
2
13
14
HV- VCC
RTH FAULT
PWM_UH
PWM_VH PWM_WH
PWM_UL PWM_VL PWM_WL
R_U
SH
R_V
SH
R_W
SH
HV+ sensor
2
1
14
13
1
3
5
1
3
1
3
CN100
CN2
CN1
2
42
4
2
5
1
2
13
14 CN93
FS1
T10A/250V
VFD-250P-230/ VFD-350P-230
AB
C
D
Pin No Function Description
1
2
14
12
10
8
13
11
9
4
5
6
3
7
HV+ sensor DC BUS 2(HV-)voltage sensor output 2.5V, reference to pin
DC BUS voltage sensor output ground
Uphase high side logic input, on >2.6V OFF <0.8V：
Vphase high side logic input, on>2.6V OFF <0.8V：
Wphase high side logic input, on>2.6V OFF <0.8V：
Uphase low side logic input, on >2.6V OFF <0.8V：
Vphase low side logic input, on >2.6V OFF <0.8V：
Wphase low side logic input, on >2.6V OFF <0.8V：
U phase current sensor output
Vphase current sensor output
Wphase current sensor output
Temperature sensor output
Overcurrent detection. Normal Abnormal>3V <0.5V；
HV-
VCC
RTH
FAULT
PWM_UH
PWM_VH
PWM_WH
PWM_UL
PWM_VL
PWM_WL
R_U
SH
R_V
SH
R_W
SH
Auxiliary voltage output 14.5~15.5V reference to pin(HV-).
The maximum load current is 0.1A

17
5
5.Function Description
5.1 Three-phase, Six-switch IGBT Control Setting
The VFD series products have internally 3 sets of half-bridge IGBT in
parallel which forms three-phase, six-switch circuits. The 6 IGBTs are
controlled by input signals PWM_UH/PWM_UL/PWM_VH/PWM_VL/
PWM_WH/PWM_WL respectively (PIN8~13) . Input signal electrical
level is compatible with TTL and CMOS 3.3V controller signals.
Recommended wiring is as follows.
Note that simultaneous activation on the high-side (H) and the low-
side (L) switches on the same phase is prohibited. A switching control
signals dead-time (t (Min.)) of 300ns or above is required.
dead
5.2Three-phase Current Detection and Over-current
Protection
The VFD series products have three built-in current shunt resistors
placed to the three phase low-side circuit loop respectively. This
signal can be used for internal over-current protection of the VFD
product and provided to external controller for current detection. The
recommended connection for this signal is as short as possible and
better to OPA for the readout circuit to obtain the best detection
results.
18
5
5.3 DC Bus Voltage Detection
Real DC Bus voltage(V)
0
200
400
600
0.00 1.00 2.00 3.00 4.00
HV+ sensor output voltage(V)
HV+ sensor specification
Short-circuit
Protection
Gate
-drive Voc U
Voc V
Voc W
Iu Iv Iw
ITRIP COMP
2.5
380 x HV+sensor
VDC BUS =
2.5
48 x HV+sensor
VDC BUS =
()
()
When the output is in overcurrent state due to abnormal condition
such as short circuit, the VFD s built-in overcurrent detection circuit'
will trigger ITRIP signal and turn off the Gate driver to protect the VFD
product hardware. ITRIP signal is triggered when output current is
higher than 200% rated current.
The VFD products have built-in DC bus voltage detection signal - HV+
sensor . This signal level is correspond to the DC bus voltage level.
When DC bus is at 380V (for AC models) or 48V (for DC models) the
HV+ sensor will be at 2.5V. Similar to the current detection circuit
suggestions, it is recommended to use an OPA circuit for the readout
for the HV+ sensor signal. To avoid product damage, when the
detected voltage is higher than 420V (for AC models) or 60V (for DC
models), it is recommended to turn off the PWM switch and/or design
a regenerative braking resistor circuit to absorb the regenerative
power.

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5
VFD-150P-48/ VFD-250P-48/ VFD-350P-48/ VFD-250P-230/
VFD-350P-230/ VFD-200C-230/ VFD-350C-230:
VFD-750C-230:
5.4 IGBT Temperature Monitoring
MCU
Vtemp
ADC
Vcc
R1
HV-
RTH
TEMP
SENSE MCU
HV-
ADC
Recommended NTC TSM2A103F34D1RZ specification sheet：
Recommended protection temperature : please refer to each
specification sheet
Recommended protection temperature : 3V
The VFD product has built-in NTC resistor or temperature sensor for
detecting the temperature of the IGBT component. This signal can be
used for the users to design the control or protection functions for the
IGBTs. The recommended circuits are as follows :
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5
5.5 Driver Error Alarm
1ust (Max.)
Tripmin.
tTripmin.
Ouput
Current
Min. over-current tripping time
FAULT
tTripmin.
200% rated current
PIN7
5us
When an overcurrent condition occurs in the VFD product, the
FAULT signal will be enabled (active-low) . When the overcurrent
duration longer than T , FAULT signal will trigger an action and
Tripmin.
notify the external control circuit that an error occurs in the VFD
driver.

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6.Abnormal Conditions and Troubleshooting
If the fault still cannot be eliminated, please contact MEAN WELL
or a MEAN WELL dealer for further support.
Phenomenon
No output
Possible Causes
Confirm whether the input
wiring is correct
Is the connection between the
main board of the VFD product
and the small board of external
control circuit correct?
Confirm whether the matching
motor is used in deceleration
regeneration mode. If so
appropriate regenerative
discharge control circuit should
be added to suppress the
voltage peaks on DC bus due to
regenerative power.
Confirm the correctness of
wiring and the correctness of
customer control board design
including UVW sequence
definition.
Confirm whether the DC Bus
capacitor voltage reaches
380V 10V±
Wrong input power
connection
PFC circuit damaged
External control board
does not give correct
signals to the PWM
control circuit.
Motor regenerative
power generation
UVW is not configured
according to VFD
three-phase output
connector definition
Solutions
6
DC bus
overvoltage
Wrong steering
with motor
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7.Warranty
VideoMEAN WELL WEB
7
If the products are used under limits and according to the specifications,
one can enjoy 5 years warranty with free repair service. Please do not
replace parts or perform any form of modification or repair on this
product by yourself, so as not to affect your right to enjoy normal
warranty services.
※MEAN WELL reserves the right to revise the user manual. If there is any
revision, please refer to the MEAN WELL official website for information .
https://www.meanwell.com

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No.28, Wuquan 3rd Rd., Wugu Dist., New Taipei City 248, Taiwan