LS G100 Variable Speed Drive
Product Information
The LS G100 is a frequency converter that is used in conjunction with an Air Handling Unit (AHU). This manual focuses on the control and communication circuits of the LS G100. The installation of the frequency converter and mains and motor cables should be done according to the LS G100 Manual. The manual provides a list of parameters and their corresponding values for configuring the LS G100. These parameters include ramp-up time, ramp-down time, maximum frequency, U/f ratio, load type, overload protection, number of motor poles, rated slip, rated current, idle run current, and P5 input function. There are different configurations provided in the manual, including local control using the integrated control panel and remote control with three speeds. For each configuration, additional parameters are specified to set the start/stop source, frequency source, and constant speeds. The manual also includes information on exhaust units with VTS control systems and AHUs with VTS control type uPC3. Parameters for these configurations are provided to set the start/stop source, frequency source, address, communication protocol, communication speed, and communication parameters.
Product Usage Instructions
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 protection | Pr-40 | 2 | Active |
| Number of motor poles | bA-11 | * | 2-12 |
| Rated slip | bA-12 | ** | – |
| Rated current | bA-13 | * | – |
| Idle run current | bA-14 | ** | – |
| P5 input function | IN-69 | 4 | Limit switch |
Configurations without VTS controls
Local control using the integrated control panel:
Set additional parameters:
| Parameter | Code | Value |
|---|---|---|
| Start/stop source | drY | 0 |
| Frequency source | Frq | 0 |
Use the RUN and STOP/RST buttons on the integrated control panel to control the drive. Use the buttons or potentiometer to set the frequency.
2.2 Remote control with three speeds:
Set additional parameters:
| Parameter | Code | Value |
|---|---|---|
| Start/stop source | drv | 0 |
| Frequency source | Frq | 0 |
| Constant speed 1 | St1 | * |
| Constant speed 2 | St2 | * |
| Constant speed 3 | St3 | * |
Use the P1/P3/P4/P5 inputs to set the desired drive function (1=on, 0=off). The corresponding input values are: 0000 = STOP, 1100 = START, 1ST SPEED, 1110 = START, 2ND SPEED, 1111 = START, 3RD SPEED.
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 2 | St2 | * |
| Constant speed 3 | St3 | * |
Use the P1/P3/P4/P5 inputs to set the desired drive function (1=on, 0=off). The corresponding input values are: 0000 = STOP, 1100 = START, 1ST SPEED, 1110 = START, 2ND SPEED, 1111 = START, 3RD SPEED.
AHU with VTS controls type uPC3:
To allow control of the G100 frequency drivers, set the VFD type to G100 in uPC3 settings (HMI Advanced mask I03).
Set additional parameters:
| Parameter | Code | Value |
|---|---|---|
| Start/stop source | drv | 3 |
| Frequency source | Frq | 6 |
| Address | CM-01 | 2 |
| Comm. protocol | CM-02 | 3 |
| Comm. speed | CM-03 | 5 |
| Comm. parameters | CM-04 | 7 |
Use Modbus RS-485 as the communication protocol with a speed of 9600 bps and 8N1 parameters. To restore G100 to default settings, set dr-93 = 1 and switch off the power supply. v1.01 (08.2023)
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 THE INSTALLATION OF MAINS AND MOTOR CABLES SHOULD BE DONE ACCORDING TO THE LS G100 MANUAL.
PART LIST
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 slip | bA-12 | ** | – |
| Rated current | bA-13 | * | – |
| Idle run current | bA-14 | ** | – |
| P5 input function | IN-69 | 4 | Limit switch |
as per motor data parameters to be calculated
- rated slip = (1 – number of motor poles * rated speed / 6000) * 50 Hz
- idle run current = 0,3 * rated current
CONFIGURATIONS WITHOUT VTS CONTROLS
Local control using the integrated control panel Set additional parameters:
| Parameter | Code | Value | Comments |
| Start / stop source | drv | 0 | Keypad |
| Frequency source | Frq | 0 | Potentiometer |
Use the RUN and STOP/RST buttons to control the drive Use buttons / potentiometer to set frequency
Remote control with three speeds
Set additional parameters:
| Parameter | Code | Value | Comments |
| Start / stop source | drv | 1 | Programmable inputs |
| Frequency source | Frq | 4 | Constant speeds |
| Constant speed 1 | St1 | * | 0-100 Hz |
| Constant speed 1 | St2 | * | 0-100 Hz |
| Constant speed 1 | St3 | * | 0-100 Hz |
| 0000 = STOP |
| 1100 = START, 1ST SPEED |
| 1110 = START, 2ND SPEED |
| 1111 = START, 3RD SPEED |
EXHAUST UNIT WITH VTS CONTROL SYSTEM
Set additional parameters:
| Parameter | Code | Value | Comments |
| Start / stop source | drv | 1 | Programmable inputs |
| Frequency source | Frq | 5 | Constant speeds |
| Constant speed 1 | St1 | * | 0-100 Hz |
| Constant speed 1 | St2 | * | 0-100 Hz |
| Constant speed 1 | St3 | * | 0-100 Hz |
as per user preferences 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 |
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 | Code | Value | Comments |
| Start / stop source | drv | 3 | Modbus RS-485 |
| Frequency source | Frq | 6 | Modbus RS-485 |
|
Address |
CM-01 | 2 | Supply 1 |
| 3 | Exhaust 1 | ||
| 5 | Supply 2/ redundant | ||
| 7 | Supply 3 | ||
| 9 | Supply 4 | ||
| 6 | Exhaust 2 / redundant | ||
| 8 | Exhaust 3 | ||
| 10 | Exhaust 4 | ||
| Comm. protocol | CM-02 | 0 | Modbus RS-485 |
| Comm. speed | CM-03 | 3 | 9600 bps |
| Comm. parameters | CM-04 | 0 | 8N1 |
NOTE! To restore G100 to default settings set dr-93 = 1 and switch off the power supply.
Documents / Resources
 | LS G100 Variable Speed Drive [pdf] User Manual G100 Variable Speed Drive, G100, Variable Speed Drive, Speed Drive |