Omega Vehicle Security freedom OM-550 - Manual (Page 18)

OM-550 u 13 u
2.3 INPUTS
As previously discussed, the OM-550 accepts either voltage or thermocouple inputs.
The Signals discussed in this section are input through one of the channel connectors
on the right side of the OM-550.
2.3.1 VOLTAGE (TRANSDUCER) INPUTS
The Voltage connector used for inputs is a white connector with copper pins.
Figure 2-13
2.3.2 PROBES
Optional Voltage and Current probe sets are available for the OM-550. They provide a
convenient way to connect the OM-550 to voltage or current signals:
PROBE SET APPLICATION
±2 VDC VOLTAGE connects to signals in the ±2 VDC range
±10 VDC VOLTAGE connects to signals in the ±10 VDC range
4-20 mA CURRENT converts 4-20 mA loop currents to ±2 VDC signals
For convenience, the OM-550 can be programmed to Scale data. The following table
includes m (slope), b (offset) and dp (decimal point) settings for common probe
applications:
PROBE INPUT RANGE m b dp PRINT RANGE UNITS
±2 V ±2 VDC +1.00000 +000000 4 -2.0000 to +2.0000 V*
±10 V ±10 VDC +0.50000 +000000 3 -10.000 to +10.000 V
0-10 VDC +0.50000 +000000 3 00.000 to +10.000 V
0-5 VDC +0.50000 +000000 3 00.000 to+05.000 V
1-5 VDC +0.50000 +000000 3 +01.000 to +05.000 V
4-20 mA 4-20 mA +1.00000 +000000 3 +04.000 to +20.000 mA**
* Default label for VOLTAGE channels ** Example only; many UNIT labels are available.
Refer to sections 4.15 UNIT LABELS and 4.14 VOLTAGE INPUT SCALING for more
information.