JULABO SC 2500w Professional Series Recirculating Coolers - Manual (Page 58)

Menu functions
58
XXXXX
A-ALARM
NORMAL
Type of alarm
For > A-ALARM / NORMAL < pins 2 and 3 are connected in any case
according to the selected > Function-ALARM <.
For > A-ALARM / INVERS < pins 2 and 1 are connected in any case
according to the selected >Function<.
Switching capacity max. 30 W / 40 VA
Switching voltage max. 125 V /
Switching current max. 1 A
1
2
3
AK
STAND-BY
XXXXX
EX-STBY
ACTIV
E OFF
S xx.xx
E -----
EX-STBY: External Stand-by input
(for external emergency switch-off)
(Connector see page 65)
Possible parameters: >EX-STBY <
INACTIV - standby input is ignored
ACTIV - standby input is active
Activate the standby input:
1. Under menu item > EXT-STBY <, set the parameter to >ACTIV<.
2. Connect an external contact ‚AK‘ (e.g. for emergency switch-off) or
an alarm contact of the superordinated system.
In case the connection between Pin 2 and Pin 3 is interrupted by opening
the contact ‚AK‘, a complete shutdown of the circulating pump and heater
is effected, and the unit enters the condition „E OFF“.
If the contact is reclosed, the instrument returns to the standby state and
„E OFF“ is displayed. Press
to start.
AK
1
2
3
STAND-BY

Additional tips for using the STANDBY input:
The standby function can be used in conjunction with the AUTOSTART
feature (see page 41)
1. If the Autostart function is NOT turned ON, the standby input is used
as described above.
2. If the Autostart function is enabled, the instrument will revert back to
the original method of entering the setpoint (i.e. keypad, RS232,
Analog input, etc.).
Entering the setpoint with the keypad. e.g.
As described above, a bipolar shutdown is accompanied by
displaying the „E OFF“ state. The recirculating cooler starts again
when the contact is reclosed. The temperature of the bath fluid
changed during the „E OFF“ state.
Entering the setpoint with the programmer (see pages 48). The
display E OFF appears. The setpoint value and the time are both held
at the current value. The temperature of the bath fluid will be held
constant at this temperature. The programmer continues once the
contact is reclosed.
Notice: This is not an actual shutoff feature.