3 Operation overview
SMARTS II
21
Pin nr Function
1
N.O. (Normally open)
Relay contact
2
ENABLE/RECORDER (0/-1 V)
Input/Output
3
COM (Common)
Relay contact
4
STATUS (-4 V/+4 V)
Input/Output
5
N.C. (Normally closed)
Relay contact
6
+12 V to +24 V (shorted to 7),
Floating supply
see 4.5 External power supply operation p 24
7
+12 V to +24 V (shorted to 6),
Floating supply
see 4.5 External power supply operation p 24
8
-V
Floating supply
9
GND
Input/Output
(internal Ref voltage, not same as -V)
