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Installing and putting a SINAUT modem into operation
6.2 GSM modem MD720-3
Connecting to the power supply
Figure 6-1
The screw terminals at the top are for connecting the power supply source:
● 24 V DC (nominal), I
The two screw terminals on the left (24 V) are connected internally (see Figure). The two
screw terminals on the right (0 V) are connected internally.
Installation on a 35 mm standard rail
The MD720-3 is intended for installation on DIN rails complying with DIN EN 50022. There is
a suitable fastener on the rear of the device.
Table 6-4
Dimensions of the MD720-3 modem
MD720-3
W x H x D (mm)
Depth with connected cable (mm)
6.2.2
Connecting the MD720-3 to the TIM and antenna
The following figure shows how the GSM modem MD720-3 is connected to a TIM over RS-
232 and to an antenna.
Figure 6-2
230
CAUTION
Only use antennas from the range of accessories SINAUT Telecontrol intended for the
MD720-3 modem. Other antennas may have detrimental effects on the device
characteristics and may even cause damage.
Connector for 24 V DC power supply
260 mA
typ
Connecting the MD720-3 to a TIM over RS-232 and to an antenna
s
SET
SINAUT ST7 Station control system - System Manual
Dimensions
22.5 x 99 x 114
approx. 170
System Manual, 05/2007, C79000-G8976-C178-06
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