© 2018 Thorlabs
3 Operating the ITC4000 Series
19
3.1.7 Pin Assignment of the TEC Output Jack
Pin assignment of the 17W2 DSUB TEC output jack (rear panel view)
Pin
Connection
TEC element (Peltier element)
1)
:
A1
TEC element (+, when cooling)
A2
TEC element (-, when cooling)
Attention: Do not connect to Ground!
2
Voltage measurement TEC element (+)
9
Voltage measurement TEC element (-)
Open circuit monitoring, status indicator, external fan:
1
Interlock, TEC ON LED (+)
7
12V Output (for external fan; max. current = 500mA)
15
Ground for 12V Output and Interlock, TEC ON LED (-)
Temperature sensor:
3
Thermistor (-), PT100/1000 (-), analog ground
4
Thermistor (+), PT100/1000 (+)
10
PT100/1000 (-), AD590/592 (-), LM35 out, LM135/235/335 (+)
11
PT100/1000 (+), AD590/592 (+), LM35/135/235/335 (+)
5,12
Analog
ground, LM35/135/235/335 (-)
other:
14
I/O 1-wire (currently not used)
6
Digital
ground for I/O 1-wire
8, 13
Not connected
1)
TEC element output pins and voltage measurement input pins are "ground-free".
Do not connect
any of
these pins to Ground, otherwise the electronic circuit will be damaged!
Attention
The maximum TEC output current for the ITC4000 Series is 15A. Use only the specified
connector type: 17W2 mixed DSUB plug with high power contacts A1 and A2 rated for at
least 15A current. For wiring of A1 and A2 use only wires rated for at least 15A current.
If Thorlabs laser diode mounts like TCLDM9, LDM21, or LM14S2 are used, the easiest way to
connect them using a shielded cable CAB4000 (rated TEC current is 5A).
For use of other equipment, a shielded cable with two 17W2 mixed DSUB plugs, CAB4001,
(20A current rating) is also available.
