Omega-vehicle-security freedom OM-550 Manuel d'utilisateur télécharger pdf (Page 18)

OM-550 u13u

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.

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Omega-vehicle-security freedom OM-550 Manuel d'utilisateur Page 18