Savch S900 Series User manual

S900 Series Inverter
Multi Function Mini Type (IM)
User Manual
User Manual

S900 Series Inverter
Multi-function Mini Type (IM)
User Manual
File No. 520000009075
Vision No. V1.5
Filing time 2020-11-16
SAVCH electric provide a full range of technical support for our customers.
All users could contact with the nearest SAVCH office or service center,
also could contact with our headquarters directly.
SAVCH Electric reserves the copyrights and all rights,
Subject to change without further notice.

Contents
PREFACE................................................................................................................................................................ 1
Ⅰ.SAFETY INSTRUCTIONS................................................................................................................................... 2
1. NOTES FOR OPERATION............................................................................................................................................... 2
2. NOTES FOR OPERATION ENVIRONMENT................................................................................................................ 4
Ⅱ. DESCRIPTIONS FOR BODY AND INSTALLATION .......................................................................................... 5
1. OPERATION ENVIRONMENT........................................................................................................................................ 5
2. MODEL DESCRIPTION.................................................................................................................................................... 6
4. LIST OF APPLICABLE NO-FUSE BREAKER............................................................................................................ 9
5. APPLICATION AND DESCRIPTION FOR AMBIENT EQUIPMENTS................................................................... 10
6. BASIC WIRING DIAGRAM............................................................................................................................................ 13
7. EXTERNAL DIMENSIONS............................................................................................................................................. 15
Ⅲ. DESCRIPTION OF OPERATION PANEL..........................................................................................................16
1. DESCRIPTION FOR DIGITAL OPERATION PANEL................................................................................................ 16
2. DESCRIPTION OF PANELOPERATION..................................................................................................................... 18
3. PRELIMINARY OPERATION-NOT CONNECTING WITH MOTOR....................................................................... 19
Ⅳ. LIST OF DESCRIPTIONS FOR FUNCTIONAL PARAMETERS........................................................................21
Ⅴ. DESCRIPTION OF FUNCTIONAL PARAMETERS...........................................................................................32
0. USER'S PARAMETERS................................................................................................................................................. 32
1. BASIC PARAMETERS ................................................................................................................................................... 35
2. OPERATION MODE PARAMETERS........................................................................................................................... 39
3. OUTPUT FUNCTION PARAMETERS......................................................................................................................... 43
4. INPUT FUNCTION PARAMETERS.............................................................................................................................. 48
5. MULTI-STEP AND AUTO-PROGRAM OPERATION PARAMETERS................................................................... 54
7. SPECIAL PARAMETERS............................................................................................................................................... 59
8. HIGH FUNCTION PARAMETERS................................................................................................................................ 60
9. COMMUNICATIONS PARAMETERS.......................................................................................................................... 63
A. WOBBLE FREQUENCY FUNCTION PARAMETERS............................................................................................. 73
Ⅵ. TROUBLE SHOOTING.....................................................................................................................................76
1. ALARM AND CORRECTIVE MEASURES................................................................................................................. 76
2. TROUBLESHOOTING FOR FAULTS IN GENERAL................................................................................................ 78
Ⅶ. MAINTENANCE AND AMBIENT ELEMENTS...................................................................................................79
Contents 1.............................................................................................................................................................81
1. Basic wiring diagram .................................................................................................................................................... 81
2.Control Circuit Terminal Position Map..................................................................................................................... 82
3.List of Brake Resistor .................................................................................................................................................... 82

1
PREFACE
Thanks for your use of SAVCH inverter! This instruction manual, which includes operation descriptions and notes for
maintenance, shall be delivered to the end-user.
For safety running and effective operation, this instruction manual shall be read thoroughly prior to use, which shall
also be preserved for later use.
Provided problems occur and solution is not provided in this instruction manual, contact your SAVCH Electric
representative or contact with our company directly. Our professional technicians will serve for you actively. And
please continue to adopt products of SAVCH, give valuable opinion and advice.
1. Reading Instructions
Symbols of” WARNING” and” CAUTION” in the manual indicates that, for safety running or maintenance of inverters
or other electrical products, attention shall be attached during delivering, installation, operation and checks for the
inverter.And these notes shall be applied for a better and safer operation.
WARNING
Indicates a potentially hazardous situation visiting. If not used correctly, personnel
damage even death may be caused.
CAUTION
Indicates a potentially hazardous situation visiting. If not used correctly, serious
damage to inverter or machine may be resulted.
WARNING
● Do not touch circuit board and other components after power supply off and CHARGE indicators are still ON.
● Never connect wires while power on. Do not check components or signal for circuit board during operation.
● Do not dismantle or change inner wire, circuit or components unnecessarily. Make sure grounding terminals
are correctly grounded. 200V class: Grounding Ⅲ; 400V class: Special Grounding.
CAUTION
● Do not perform a insulation test and withstand voltage test by megohmmeter, it can cause semi-conductor
components to be damaged by high voltage.
● Never connect the output terminals U, V, W to AC power supply.
● IC of CMOS on control circuit of the inverter shall be damaged by electrostatic influence. Do not touch main
circuit board.
2. Products receiving
All products have been performed with strict test and inspection. After receiving the inverters, the following checks
shall be performed.
● To check that SAVCH inverter, an instruction manual.
● To check whether model number correspond with model and capacity your purchase order.
● To check whether there are damaged parts during transportation and delivering. If there are, do not connect with
power supply.
If any of the above checkpoints are not satisfactory, contact your SAVCH representative for a quick resolution.

2
Ⅰ.SAFETY INSTRUCTIONS
1. NOTES FOR OPERATION
Before wiring
CAUTION
● Specification of applying power supply shall correspond to input voltage of the inverter.
WARNING
● Main circuit terminals must be correct, L1/R, L2/ S and L3/ T is input terminals and it’s forbidden to use
mixing with U, V and W. Failure to observe this may cause the inverter damaged.
CAUTION
● When delivering the inverter, do not take the cover directly. Take the air fan seat to prevent the cover
got off. Inverters getting off which may cause damage to personal or machine shall be avoided.
● Install the inverter on metal or other non-inflammable materials. Do not fix it on inflammable materials
which may cause a fire hazard.
● In case of several inverters are installed together in one control panel, a fan shall be prepared to make
sure temperature lower than 40℃, thus over-heating or a fire hazard shall be avoided.
● Make sure applied power supply comply with label showed on the right of the machine. Failure to
observe this may cause action failure.
During operation
WARNING
● Never put in or take off the motor during operation, otherwise over-current even over burning the main
circuit of the inverter may happen.
● When auto-restart function is set, do not approach the machine since motor can be reset suddenly after
being stopped.
● The function set can make the stop key invalid, which is different from the emergency stop key. Please
pay attention to it.
CAUTION
● Never touch heat sink or discharging resistor since temperature may be very high.
● Since it is easy to change running speed from low to a high speed, verify safe working range of motor
and machine before running.
● Use brake unit according to the method described in wiring diagram.
● Do not check signals during running.
● All parameters of the inverter have been preset at the factory according to line frequency. Do not
change the setting value at will.

3
During check and maintenance
CAUTION
● Ambient temperature for operating the inverter shall be -10℃to + 50℃(+40℃parallel installation) and
90%RH no condensation. However under this condition, the ambient environment must be without
drips of water or metal dust.
During Disposal
CAUTION
● Explosion may occur when burning the electrolytic capacitor of the main circuit and printing plate. Toxic
gas may be generated when burning control keypad and other plastic fittings. It shall be treated as
Industrial waste.

4
2. NOTES FOR OPERATION ENVIRONMENT
Do not use the inverter in an environment with the following conditions：

5
Ⅱ. DESCRIPTIONS FOR BODY AND INSTALLATION
1. OPERATION ENVIRONMENT
Since operation environment can directly influence functions and operation life, to ensure proper performance and
long operation, follow the recommendations below when choosing allocation for installing the inverter. Make sure it is
protected from the following:
Extreme cold and heat.
Use only with the ambient temperature range: -10℃to +50℃(+40℃parallel installation)
Rain, moisture
Direct sunlight.(Avoid using outdoors)
Corrosion of oil sprays or salt
Corrosive fluid and methane
Dust or metallic particles in the air
Radioactive materials and inflammable materials
Electromagnetic interference (Avoid using together with welding machine or dynamic machines.)
Vibration
(If inverter must be used in this environment, an anti vibration pad is necessary).
Attention shall be attached to clearance of inverters allocated closely. A fan shall be installed to make sure
temperature is lower than 50℃
INSIDE THE CABINET
Wrong configuration
AIR EXCHANGE
FAN
INSIDE THE CABINET
INSIDE THE
CABINET
Correct configuration Wrong configurationCorrect configuration
INSIDE THE CABINET
AIR EXCHANGE
FAN
For cooling off, face shall be toward front and upper parts shall be upwards.
Clearance shall meet the following specifications:
(a)FRONT
Inverter
DIRECTION
OF
INSTALLATION
12cm 12cm
12cm
12cm
5cm
(b)SIDE
VENTILATION
-10-+40℃

6
2. MODEL DESCRIPTION
TYPE：S900-4T1.5G
INPUT：AC 3PH 380~460V 50/60Hz
OUTPUT：3PH 0~460V 3.2KVA 4.2A
FREQUENCYRANGE：0.1~400Hz
Designed by Taiwan Savch Electric
Model
Input power supply Spec.
Output power supply Spec.
Output frequency
Product
series
S 900 - 4T 1.5 G B
0.2：0.2kW
0.4：0.4kW
0.75：0.75kW
1.5：1.5kW
2.2：2.2kW
3.7：3.7kW
SAVCH G：Constant torque
load(for general use)
2S：220V
Single phase
4T：440V
Three phase
B：Inverter Model with
built-in brake resistor

7
3. SPECIFICATIONS
Product Specifications
■ 200V Single Phase Series
Model number S900-2S□□□G
0.2
0.4
0.75
1.5
2.2
Output
Max applicable motor output power(kW)
0.2
0.4
0.75
1.5
2.2
Max applicable motor output power(HP)
0.25
0.5
1
2
3
Output rated capacity(kVA)
0.6
1.0
1.9
2.5
4.2
Output rated current (A)
1.6
2.5
4.2
7.5
11
Output frequency range
0.1 to 400Hz
Over load capacity
150% of rated output current and run for 60sec.
Max output voltage
Correspond to input power supply
Input
Phase number﹒Voltage﹒Frequency
Single phase. 200 to 240V. 50/60Hz
Allowable variation range for Voltage﹒
Frequency
Voltage: ±10%, Frequency: ±5%
Power capacity needed (kVA)
1.1
1.5
2.2
3.9
6.0
Input current (A)
4.9
6.5
10
17.5
27
Cooling System
Natural cooling
Fan cooling
■ 400V Three Phase Series
Model number S900-4T□□□G
0.4
0.75
1.5
2.2
3.7
Output
Max applicable motor output power(kW)
0.4
0.75
1.5
2.2
3.7
Max applicable motor output power(HP)
0.5
1
2
3
5
Output rated capacity(kVA)
1.2
2.3
3.2
4.2
6.3
Output rated current (A)
1.5
2.5
4.2
5.5
8.2
Output frequency range
0.1 to 400Hz
Over load capacity
150% of rated output current and run for 60sec.
Max output voltage
Correspond to input power supply
Input
Phase number﹒Voltage﹒Frequency
Three phase. 380 to 460V. 50/60Hz
Allowable variation range for Voltage﹒
Frequency
Voltage: ±10%, Frequency: ±5%
Power capacity needed (KVA)
1.3
2.3
4.0
4.8
6.0
Input current (A)
1.9
3.5
6.0
7.2
9.0
Cooling System
Natural cooling
Fan cooling