Statox 502 Control Module
Issue 1/2015
Page 11 of 40
Communication bus
The bus interfaces the 24 V-power supply and the alarm signals from one module to the next.
A Common Alarm Module can evaluate the alarm signals.
Bus ports
Description
0 V
Zero - 0 V
+24 V
Positive 24 ± 2 VDC
A1
Exceeding alarm threshold 1 sets the signal on terminal A1 to Low(0V)
A2
Exceeding alarm threshold 2 sets the signal on terminal A2 to Low(0V)
SF
A system failure sets the signal on terminal SF to Low (0V)
Figure 6: Bus terminals
Electrical connections
The Statox 502 operates at 24 ± 2 VDC. Higher voltage or short circuits on the terminals
may destroy the module.
The terminals are pluggable. To remove the terminal blocks, set the screwdriver directly over the screws and
press the block to the front side.
The terminals can take cable diameters up to 2.5 mm
2
.
!
