JULABO SC 2500w Professional Series Recirculating Coolers - Manual (Page 65)

Recirculating Cooler
65
ALARM
Alarm output
(for external alarm signal)
This potential-free change-over contact is activated in case of an alarm
when pins 2 and 3 are connected.
Switching capacity max. 30 W / 40 VA
Switching voltage max. 125 V /
Switching current max. 1 A
Functional description see page 57
1
2
3
AK
STAND-BY
STAND-BY input
(for external emergency switch-off)
Pin assignment:
Pin Signal
1 not connected
2 5 V / DC
3 0 V
Functional description see page 6
1
2
3
4
5
6
REG+E-PROG
Programmer input / temperature recorder output
Pin Signal
1 Voltage output Channel 1 0 ... 10 V
2 Voltage output Channel 2 0 ... 10 V
3 GND for outputs 0 V
4 Programmer input EPROG 0 to 10 V / 0 to 20 mA
5 Current output Channel 3 0 to 20 mA / 4 to 20 mA
6 GND for Progammer 0 V
Functional description see page 59
Control connector
Return flow safety device.
If the liquid levels in the recirculating cooler and the external system are
at different heights, overflowing must be prevented after the power has
been turned off. For this reason, solenoid valves for loop circuit can be
integrated in the loop circuit.

The control output is not powered in the OFF condition.
Output voltage: 230 V
 / max. 0.1 A