Data Aire gForce Ultra - VFD Parameter Settings - Danfoss CDS-303 Drive (36 to 125 Kw Ultra Units); Programing the VFD for Modbus Communications; Program Danfoss CDS-803 VFD for Modbus Communication; Figure 18 CDS-303 Drive P;N Various (36 to 125 Kw Ultra Units)

gForce Ultra IOM
78
VFD parameter settings - Danfoss CDS-303 Drive (36 to 125 kW Ultra units)
Figure 18 CDS-303 Drive P/N Various (36 to 125 kW Ultra units)
Menu ID
Description
Setting
3.** Reference / Ramps
3.4* Ramp 1
3-41
Ramp 1 Ramp Up Time
120s
3-42
Ramp1 Ramp Down Time
300s
4.** Limits / Alarms
4.1* Motor Limits
4-18
Current Limit
110% (Change not be changed)
5.** Digital In/Out
5-02 Terminal 29
5-02
Terminal 29 Mode
[1] Output
5.1* Digital Inputs
5-12
Terminal 27 Digital Input
[0] No operation
5-19
Terminal 37 Safe Stop
[3] Safe Stop Warning
5.3* Digital Outputs
5-31
Terminal 29 Digital Output
[44] Oil Boost
5.4* Relays
5-40
Function Relay [Relay 2]
[5] Running
5-40
Function Relay [Relay 7]
P/N 101-930-002
[9] Alarm
Programing the VFD for Modbus Communications
These instructions cover programming using the MCT 10 Local Control Panel (LCP) of the compressor
VFD for Modbus communication with the dap4 controller to display the VFD operating data.
NOTE: There are two different types of compressor VFDs. The CDS-803
is used on the 22 KW compressor and the CDS-303 is used on the 36 KW
and 45 KW compressors. Selecting the wrong VFD type may lead to
erroneous VFD data reading on the dap4 display.
Program Danfoss CDS-803 VFD for Modbus Communication
• Use the LCP and the Up, Down and OK keys, press the Main Menu on the VFD, then move
to Parameter 8-Communications and Options.
• Go to Menu 8-3* FC Port Settings then move to parameter 8-30 Protocol and change the
protocol from FC (0) to Modbus RTU (2).
• Go to parameter 8-31 Address and change the address to 19.
• Go to menu parameter 8-32 FC Port Baud Rate and change the baud rate to 19200 (3).
• Go to parameter 8-33 Parity / Stop Bits and select No Parity, 1 Stop Bit (2).
• Next go to Menu 8-4* FC MC Protocol Set and set then parameter 8-43 PCD Read
Configuration