User guide

Hardware Installation
692302 3-13
3.3.4 Supply Voltage
The supply voltage must be within the range of 10 V to 60 V DC or 16 V to 40 V AC
(50 - 60 Hz).
Connect the 24 V voltage supply to the "24V" and "0V" connection points on the
plug-in screw terminal block.
Figure 3-9 Connections
As soon as the "VCC" LED lights up, the modem is ready.
3.3.5 Switching Input
3.3.6 Switching Output
The switching output is a floating form A contact and is designed for 60 V/1 A. The
contact is connected to the plug-in screw terminal block marked with the form A
contact symbol (see Figure 3-9).
The PSI-DATA/FAX-MODEM/RS232 module is designed exclusively for SELV
operation according to IEC 60950/EN 60950/VDE 0805.
Table 3-3 Switching input on the plug-in screw terminal block
Connection Meaning
i+ (floating) 9 V to 48 V DC
i– 0 V
n . c . a b
2 4 V 0 V n . c . n . c .
i + i -
6 9 2 3 A 0 3 8
2 4 V 0 V