F4 Digital Input Connections; 4-20 Ma Output Connections; Analog Output Transmitter Power Supply; Interlock Relay Feature - Precision Digital Corporation ProtEX-MAX PD8-6210 Instruction Manual

ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller Instruction Manual

F4 Digital Input Connections

A digital input, F4, is standard on the meter. This digital input connected with a normally open closure
across F4 and COM, or with an active low signal applied to F4.

4-20 mA Output Connections

Connections for the 4-20 mA transmitter output are made to the connector terminals labeled MA OUT.
The 4-20 mA output may be powered internally or from an external power supply.

Analog Output Transmitter Power Supply

The internal 24 VDC power supply powering the analog output may be used to power other devices, if the
analog output is not used. The I+ terminal is the +24 V and the R terminal is the return.

Interlock Relay Feature

As the name implies, the interlock relay feature reassigns one, or more, alarm/control relays for use as
interlock relay(s). Interlock contact(s) are wired to digital input(s) and trigger the interlock relay. This
feature is enabled by configuring the relay, and relative digital input(s) (see page 41). In one example, dry
interlock contacts are connected in series to one digital input which will be used to force on (energize) the
assigned interlock power relay when all interlock contacts are closed (safe). The interlock relay front
panel LED flashes when locked out. The interlock relay would be wired in-series with the load (N/O
contact). See below.
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Figure 15: F4 Digital Input Connections

24 V
MA OUT
RELAY1
I- I+ R
3 2 1 3 2 1
-
+
4-20 mA Input
Remote Display,
Chart Recorder, Etc.

Figure 16: 4-20 mA Output Connections

Figure 17: Interlock Connection

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24 V
MA OUT
RELAY1
I- I+ R
3 2 1 3 2 1
- -
+
+
12-35 VDC
4-20 mA
Power
Input Meter
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