JULABO FP51-SL Ultra-Low Refrigerated Circulators - Manual (Page 74)

Menu functions
74
9.9.4. External Stand-by input
Ext. StBy (External STAND-BY input)
Stand-By input for external switch-off.
Possible parameters:
inactive - Stand-By input is ignored
active - Stand-By input is active
1
2
3
AK
STAND-BY
AK
1
2
3
STAND-BY
Activate the standby input:
1. Under menu item >Ext. StBy<, set the parameter to >active<.
2. Connect an external contact “AK” (e.g., for external switch-off) or an
alarm contact of the superordinated system.
If 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”.
As long as the contact remains open, line 4 of the LCD DIALOG-
DISPLAY flashes and displays the message “Stand-By”.
If the contact is reclosed, the instrument returns to the standby state and
“ E OFF “ is displayed. Press
to start.

Additional tips for using the STAND-BY input:
The standby function can be used in conjunction with the AUTOSTART
feature.
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 complete shutdown is accompanied by the
“Stand-By” display and the OFF state. The programmable controller
starts again when the contact is reclosed. The temperature of the
bath fluid changed during the Stand-By state.
Entering the setpoint with the programmer.
The display “StandBy” 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 emergency switch-off.