Danfoss Turbocor TT Series, Service Manual

Page: 60 / 294

4.3 Compressor Interface Module
The Compressor Interface Module (CIM), also referred to as the Compressor I/O Board, allows the user to control and
communicate with the compressor, and allows the compressor to return status and sensor information to the user.
Refer to Figure 4-18 Compressor Interface Module Ports & Jumpers.
Figure 4-18 Compressor Interface Module Ports & Jumpers
Table 4-8 CIM Ports and Jumpers
No. Component No. Component
J1 RS-485 Communication Port JP1 Analog Output Voltage
J2 Input/Output JP2 MODBUS Terminator
J3 Input/Output JP3 Entry
J4 EXV1 and EXV2 Control JP4 Leave
J5 Liquid Level Input JP5 LIQ LEV1
J6 Compressor Interface Cable Connection JP6 LIQ LEV2
J7 RS-232 External Communication Port
J8 External Sensor Inputs
4.3.1 Compressor Interface Module Connection Descriptions
J1 – RS-485 external communication port
l
Jumper JP2 required at end of Modbus line
J2 – Input/output
l
DEMAND – Pin 1 & 2 – Analog input to drive compressor (0-10V)
l
I/LOCK – Pin 3 & 4 – Interlock safety switch: must be part of a closed circuit to start compressor
Page 60 of 294 - M-SV-001-EN Rev. H 1/23/2023