Common Defrost - Tefcold EXPRESS EX125C Instruction Manual

AUX output configuration: 0=no function associated with the
output, 1=alarm output: norm. Energised, 2=AUX output
H1 related to Dig. in.A4 = 6/7/8 Dig. In. OPEN = AUX de-
energised, Dig. in. CLOSED = AUX energised + LED "AUX"
display"
Enable keypad (0=keypad disabled,1=keypad
H2
enabled,2=keypad enabled except for ON/OFF)
H4 Disable buzzer (0=buzzer enable,1=buzzer disable)
H5 ID code (read-only)
EZY Rapid parameter set selection

5.1.1 Common Defrost

▪ If the multiplexing cabinet is operated as slave module depending on the master module,
parameter A4 must be set as 3 (factory set). Parameter "A4 = 3" means defrost start
(pulse-pressure) via the signal received from master module. This maintain simultaneous
defrosting in the cabinets on the same multiplexing line.
▪ Connect P3 connector of master cabinet to the P2 connector of slave cabinet to initiate
common defrost (see wiring diagrams).
▪ Master cabinet initiate defrost for both cabinets if required connection is made properly.
▪ If master cabinet terminates defrost regarding to parameters "dt" or "dp", slave cabinet
also terminates if required connection is made properly.
▪ Slave cabinet terminates defrost if parameter "dt" reaches defrost end temperature
without waiting a signal from master cabinet.
- 0
- 2
- 0
- -1
- 4
0
2
0
0
4