LS G100 Control and Modbus Communication
Specifications:
- Model: LS G100
- Control Type: Modbus Communication
- Communication Protocol: Modbus RS-485
- Communication Speed: 9600 bps
- Rated Frequency: 100 Hz
- U/f Ratio: 1 (Square characteristic)
- Number of Motor Poles: 2-12
Product Usage Instructions:
1. Configurations Set Common Parameter List:
For all configurations, set the common parameter list as
follows:
| Parameter | Code | Value | Comments |
|---|
2. Configurations Without VTS Controls:
2.1 Local Control Using Integrated Control Panel:
To set up local control using the integrated control panel,
follow these steps:
- Set Start/Stop Source to 0.
- Set Frequency Source to 0.
- Utilize the RUN and STOP/RST buttons on the control panel for
drive control.
2.2 Remote Control with Three Speeds:
To enable remote control with three speeds, follow these
steps:
- Set Start/Stop Source to desired value.
- Set Frequency Source to desired value.
- Assign Constant Speeds 1, 2, and 3 accordingly.
3. Exhaust Unit with VTS Control System:
If using an exhaust unit with a VTS control system, set the
parameters as per user preferences.
4. AHU with VTS Controls Type uPC3:
To control the G100 frequency drivers in AHU with VTS controls
type uPC3, follow these steps:
- Set VFD type to G100 in uPC3 settings (HMI Advanced mask
I03). - Set additional parameters for communication.
Frequently Asked Questions (FAQ):
Q: How do I restore G100 to default settings?
To restore G100 to default settings, set dr-93 = 1 and switch
off the power supply.
CONTROL AND MODBUS COMMUNICATION APPENDIX TO THE LS G100 MANUAL ITEMS AS FOLLOW:
THE FOLLOWING MANUAL ASSUMES GOOD KNOWLEDGE OF TECHNICAL DOCUMENTATION INCLUDED WITH THE AIR HANDLING UNIT (AHU). THIS MANUAL CONSIDERS ONLY THE CONTROL AND COMMUNICATION CIRCUITS. THE INSTALLATION OF THE FREQUENCY CONVERTER AND INSTALLATION OF MAINS AND MOTOR CABLES SHOULD BE DONE ACCORDING TO THE LS G100 MANUAL.
1. FOR ALL CONFIGURATIONS SET THE COMMON PARAMETER LIST
Parameter
Code
Value
Comments
Ramp up time
ACC
45
Recommended 45 s.
Ramp down time
dEC
45
Recommended 45 s.
Maximum frequency
dr-20
100
–
Rated frequency
dr-18
*
–
U/f ratio
Ad-01
1
Square characteristic
Load type
Pr-04
0
Light / fan duty
Overload protecion
Pr-40
2
Active
Number of motor poles
bA-11
*
2-12
Rated current
bA-13
*
–
Idle run current
bA-14
**
–
P5 input function
IN-69
4
Limit switch
* – as per motor data ** – parameter to be calculated: idle run current = 0,3 * rated current
2. CONFIGURATIONS WITHOUT VTS CONTROLS
2.1 Local control using integrated control panel
Set additional parameters:
Parameter
Code
Value
Start / stop source
drv
0
Frequency source
Frq
0
Use the RUN and STOP/RST buttons to control the drive
Use buttons / potentiometer to set frequency
Comments Keypad
Potentiometer
2.2 Remote control with three speeds Set additional parameters:
Parameter
Code
Start / stop source
drv
Frequency source
Frq
Constant speed 1
St1
Constant speed 1
St2
Constant speed 1
St3
* – as per user preferences
Value 1 4 * * *
Comments Programmable inputs
Constant speeds 0-100 Hz 0-100 Hz 0-100 Hz
v1.02 (03.2025)
Use P1/P3/P4/P5 inputs to set desired drive function (1=on,0=off)
0000 = STOP 1100 = START, 1ST SPEED 1110 = START, 2ND SPEED 1111 = START, 3RD SPEED
3. EXHAUST UNIT WITH VTS CONTROL SYSTEM Set additional parameters:
Parameter
Code
Value
Start / stop source
drv
1
Frequency source
Frq
5
Constant speed 1
St1
*
Constant speed 1
St2
*
Constant speed 1
St3
*
* – as per user preferences
Comments Programmable inputs
Constant speeds 0-100 Hz 0-100 Hz 0-100 Hz
Use P1/P3/P4/P5 inputs to set desired drive function (1=on,0=off)
0000 = STOP 1100 = START, 1ST SPEED 1110 = START, 2ND SPEED 1111 = START, 3RD SPEED
4. AHU WITH VTS CONTROLS TYPE uPC3
NOTE! To allow control of the G100 frequency drivers, set VFD type to G100 in uPC3 settings (HMI Advanced mask I03).
Set additional parameters: Parameter
Start / stop source Frequency source
Address
Comm. protocol Comm. speed Comm. parameters
Code drv Frq
CM-01
CM-02 CM-03 CM-04
Value 3 6
41,42,43…40 51,52,53…50
0 3 0
Comments Modbus RS-485 Modbus RS-485
Supply Exhaust Modbus RS-485 9600 bps
8N1
NOTE! To restore G100 to default settings set dr-93 = 1 and switch off the power supply.
v1.02 (03.2025)
Documents / Resources
 |
VTS Group LS G100 Control and Modbus Communication [pdf] Instructions v1.02 03.2025, LS G100 Control and Modbus Communication, LS G100, Control and Modbus Communication, Modbus Communication, Communication |