Aritech 950 Series - Input;Output Units; Single Channel Output Unit - IO955

14 900 Series V5.0: Installation Guide, April 1999
- The cables connected to the sounder output must be able to power
sounders, e.g. MICC.
3.3. Input/output units
Set the address of an input/output unit using the lower seven-segments of the DIL switch.
Each segment of the switch must be set to “0” (ON) or “1” (OFF), using a small
screwdriver or similar tool. Please refer to section 3.2.
3.3.1. Single channel output unit - IO955
Figure 9: Single channel output unit
Eight terminals are provided:
• Four for the loop connections (incoming and outgoing) with two for the positive
supply
• One for the relay pole
• One for the normally open contact
• One for the normally closed contact
• One unused terminal
Relay output
1 A @ 30 V
max. 30 V
A
C or DC
N/C
COM
N/O
L1 (-ve)*
L2 (+ve)*
Series 950
loop
* L1 and L2 are polarity insensitive but it is recommended to keep L1 negative for
consistency.