13
SOCOMEC - Réf. : 874 669 A GB
Modem RS232 <=> RTC <=> RS485
SPECIFICATIONS
Interface specifications
GENERIC I / O INTERFACE INPUT
Electrical specification
Opto isolated input
Input voltage range
0 - 60 VDC
Input current
5 mA @ 60 VDC
Input inactive
Uin < 2.5 V
Input active
Uin > 5.0 V
Transmission range
Cable length
≤
15 m
Connection
Detachable screw terminal (DCE)
Isolation to
Power port
3 kVrms 50 Hz 1 min
PSTN line
2 kVrms 50 Hz 1 min
Leased Line
2 kVrms 50 Hz 1 min
RS232
2 kVrms 50 Hz 1 min
RS485
2 kVrms 50 Hz 1 min
I / O output
2 kVrms 50 Hz 1 min
Shielded cable
Not required
(1)
(1) Railway installation close to the rails.
For a cable located within 3 m and connected to this port, the use of shielded cable is recommended, this is to minimise the risk of
interference. The cable shield should be properly connected (360 °) to an earthing point within 1 m of this port. This earthing point should
have a low impedance connection to the conductive enclosure of the apparatus cabinet, or similar, where the unit is built-in. This
conductive enclosure should be connected to the earthing system of an installation and may be directly connected to the protective earth.
GENERIC I / O INTERFACE RELAY OUTPUT
Electrical specification
One change over contact
Switching voltage
Max 40 V AC / DC
Switching current
Max 500 mA AC / DC
Electrical endurance
5 x 10
5
operations at 20 W / 20 VA Resistive load
Transmission range
Cable length
≤
15 m
Connection
Detachable screw terminal (DCE)
Isolation to
Power port
3 kVrms 50 Hz 1 min
PSTN line
2 kVrms 50 Hz 1 min
Leased Line
2 kVrms 50 Hz 1 min
RS232
1.5 kVrms 50 Hz 1 min
RS485
1.5 kVrms 50 Hz 1 min
I / O input
2 kVrms 50 Hz 1 min
Shielded cable
Not required
(1)
(1) Railway installation close to the rails.
For a cable located within 3 m and connected to this port, the use of shielded cable is recommended, this is to minimise the risk of
interference. The cable shield should be properly connected (360 °) to an earthing point within 1 m of this port. This earthing point should
have a low impedance connection to the conductive enclosure of the apparatus cabinet, or similar, where the unit is built-in. This
conductive enclosure should be connected to the earthing system of an installation and may be directly connected to the protective earth.
