THORLABS DC2200 - Interlock Circuit; Connect a Custom LED

© 2020 Thorlabs GmbH
6 Appendix
69
6.3 Interlock Circuit
Interlock
The hardware interlock is a safety feature, accessible via the INT LOCK connector (3) on the
rear panel. By default, a short circuit jumper is installed to the jack.
The interlock interface represents a current source (~1 mA when the LED is switched on),
where the voltage across the external circuit is observed. As soon as this voltage rises above
the TTL H Level, the external circuit is considered "open" and the LED current output is dis-
abled.
Instead of the jumper, an external emergency switch (opener) can be connected to the inter-
lock, as well as an external circuit (total resistance < 1 kW).
6.4 Connect a Custom LED
You can connect a custom LED to your DC2200 using the supplied connection cables.
Custom High Power LED (up to 10 A - Terminal LED1)
Use the supplied cable CAB-DC2200:
Connection scheme:
Pin
Color
Description
1
green
LED cathode
2
yellow
LED cathode
3
gray
6 V - 13 V power supply for fan
4
orange
LED anode
5
blue
LED anode
6
red
LED anode
7
black
LED anode
8
white
LED cathode
9
brown
LED cathode
10
violet
Ground power supply for fan
11
white and black striped
DO NOT CONNECT
12
white and brown striped
DO NOT CONNECT
Attention!
Do NOT connect anything to the bi-color wires (white / black and white / brown striped)! The
DC2200 might be damaged!
8