Trane CGCN Installation Operation & Maintenance page 14

Connection diagram
No. Conn. Designation
KL1 1 L1
KL1 2 L2
KL1 3 L3
PE 1 PE
KL2 1 RSA
KL2 2 RSB
KL2 3 GND
KL2 4 C
KL2 5 Din1
KL2 6 +10V
KL2 7 Ain1U
KL2 8 NC
Function/assignment
Supply connection, power supply 3-phase 380-480 VAC, 50/60 Hz
Supply connection, power supply 3-phase 380-480 VAC, 50/60 Hz
Supply connection, power supply 3-phase 380-480 VAC, 50/60 Hz
Ground connection, PE connection
Bus connection RS485, RSA, MODBUS-RTU; SELV
Bus connection RS485, RSB, MODBUS-RTU; SELV
Reference ground for control interface; SELV
Status relay, floating status contact, break for failure; contact rating 250
VAC / max. 2 A (AC1) / min. 10 mA
Digital input 1 enable electronics,
enable: pin open or applied voltage 5-50 VDC
Din16KL2disable: bridge to G7ND or applied voltage < 18 VDC
reset function: triggers software reset after a level change to < 1 V;
SELV
Fixed voltage output 10 VDC, +10 V ±3%, max. 10 mA, short-circuit-
proof, power supply for external devices (e.g. pot); SELV
Or: +24 VDC input for parameter setting via MODBUS without line
voltage
Analog input 1 (set value) 0-10 V, Ri = 100 kΩ, adjustable curve; SELV
Status relay, floating status contact, break for failure