Quantum Instruments Cascade Laser Starter Kit - Manual (Page 35)

Starter Kit Instruction Manual Use 34
6.5 Interlock utilisation
The temperature controller is designed with an built-
in interlock (1). This function is activated when a
fault occurs on the TCU151 controller (over-temperature,
over-current, etc.).
The interlock is by default a NC (Normally Close)
relay contact.
CAUTION ! It is also possible to set the Inter-
lock as a NO (Normally Open) contact. For more
details about the settings, see the procedure on page
42.
6.5.1 Before beginning
In order to recover the temperature controller from
an interlock event, please pay attention about the
following points:
• Locate the fault which caused the interlock
and fix it.
• Wait until the temperature driven by the TCU151
is lower than the maximum.
6.5.2 Procedure Interlock utilisation
To reset the temperature controller from an inter-
lock event, proceed as follows:
[1] Press the RESET button (3) on the TCU151
front panel
→ The interlock is reset and the red LED
ALARM (2) should be off.
0
1
Zin
: 1
Mo
hm
Inte
rloc
king
1
Fig.24: Interlock BNC connector
Alar
m
Res
et
Exte
rnal
Inte
rnal
2
3
Fig.25: Reseting the interlock