JULABO CF41 Cryo-Compact Circulators - Manual (Page 54)

Menu functions
54
8.5.3. STAND-BY input
Ext. StBy (10)
(for external emergency switch-off)
(Connector see page 67)
Possible parameters:
inactiv - standby input is ignored
activ - standby input is active
1
2
3
AK
STAND-BY
Setpoint1: 150.00°C
IntAct : xxx.xx°C
Power : xx %
STAND-BY
E OFF
S xx.xx
E -----
Setpoint : xxx.xx°C
IntAct : xxx.xx°C
Profil : 4 Step:12
*** STAND-BY ***
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“.
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 STANDBY input:
The standby function can be used in conjunction with the AUTOSTART
feature (see page 33).
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 shut-down 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 (see pages 44). The
display „STAND-BY“ 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.
AK
1
2
3