The SIS Current Limiter limits the current from the SLS
Discrete Output channels to levels below the ignition curves for Class 1 Div 2
and Zone 2 installations. Field wiring from the Current Limiter output to the
field can be removed and reconnected under power.
Table: SIS Current Limiter specifications
|
Item
|
Specification
|
|
Input power (from SLS DO channels)
|
17 to 29 VDC; 22 VDC nominal
|
|
Output power
|
28.8 VDC (max)
|
|
Output current range
|
0-100 mA (max)
|
|
Output current limit threshold
|
100 mA (min); 120 mA (max)
|
|
Mounting
|
Horizontal DIN rail
|
The SIS Current Limiter has the following connections as
shown in the image:
- Four pin connections for input from the SLS DO
channels
- Four pin connections for output to energy-limited
loads
Figure: SIS Current Limiter top view and dimensions
Figure: Bottom view of the SIS Current Limiter
