Functional description
Page 18 of 72
MSM-USM2G-BA-UK-004
Fig. 3.8: Back view of the USM24
[4]
Terminals supply voltage 1 (green LED indicates present voltage)
[5]
Terminals supply voltage 2 (redundant supply voltage optional)
(green LED shows present voltage)
[6]
Terminals function relays 1 - 4
[7]
Terminals alarm inputs
[8]
Terminals additional cards (optional)
[9]
Terminals function inputs 1 and 2
[10]
LAN connection (Ethernet / RJ45)
[11]
Terminals serial interface (RS232 optional RS 485)
[12]
Watchdog LEDs „Communication“
red
- Tx serial interface
green - Rx serial interface
yellow - Can-Bus
[13]
Service- and diagnosis interface USB-B (factory interface)
[14]
CAN-Bus interface (Systembus / RJ45)
[15]
2 x USB-A interface
[16]
Terminals serial interface (RS232 optional)
[17]
Watchdog LEDs „Communication“ (optional)
red
- Tx serial interface
green - Rx serial interface
[18]
LAN connection (Ethernet / RJ45, optional)
[19]
Connection for ground potential
On the USM 08, terminal X11 (function inputs) is not located under terminal X12, but
under terminal X10.