- OMEGA Engineering, Inc. Power Supply Product Manual

2... OMP-MODL System Base
Using the OMP-MODL
2-8
Terminal Strip Connections
The MLCPU-1 is provided with a terminal strip connector for connection of
power, input and output wiring (Figure 2... -4). The terminal strip connector
can be unplugged from the module allowing for quick disconnect and
reconnection of wiring. Connection details follow:
External Power (Terminals 1 & 2)
An external power source may be used to power the OMP-MODL .
If an external power supply is connected to the OMP-MODL and its
supply voltage is greater than approximately 10.7 VDC, the OMP-
MODL will operate from the external supply and the batteries will not
be used. In the event that the external power fails or drops below
10.7V, the OMP-MODL will automatically transfer to battery power
and continue operation.
The External Power Supply terminals will accept either AC or DC
input and polarity is not relevant.
EXTERNAL SUPPLY VOLTAGE RANGE:
A field selectable dual input range feature allows the logger to
accomodate a very wide range of input voltage applied to the
External terminals. A jumper provided on the MLCPU-1
programs the input range for HI or LO range:
LO Range: (8 to 24 Vdc / 10 to 23 Vac) (factory default)
HI Range: (11 to 32 Vdc / 12 to 23 Vac)
STOP
RESET
ENABLE
POWER
SERIAL PORT
RELAY R2
RELAY R1
STATUS
FEEDBACK
EXTERNAL POWER
RELAY R1
RELAY R2
+5V
TTL ALARM OUTPUT
GND
1 2 3 4 5 6 7 8 9
ML004
Figure 2... -4: MLCPU-1 Terminal Strip Connections (end view)