Operating Manual
57
© Copyright 2016
OMBG3000 – Rev1
4.11
4-20mA Outputs
If analog outputs are being used, the cable must enter the enclosure via a
suitably rated cable gland (see
Cable Gland Selection and Cord Anchorage
) and
Cable Conductor Sizes and Insulation Requirements
), through the
data outputs customer cable entry point (see annotation 3 on
BIOGAS 3000 customer connections
The outputs on the BIOGAS 3000 power the loop (24V) to allow the customers
system to sink it to ground (0V).
Relays within the equipment can be used to indicate the status of the 4-20mA
channel. Refer to section
Note: There are various combinations of configuring the system and this
operating manual will describe the most common method. If your system
does not support this, please contact our technical support team at (800)
968-2026 or email
General Information
4.11.1
There are two sets of terminals for the 4-20mA signals. One set is a bank of
terminals that provide a common 0V or 24V. The other group are double-deck
terminals that provide the analogue signal depending on the configuration of
the common terminal.
For the common terminals, labels identify the appropriate terminals namely
from left to right (‘0V’, ‘T1’ through ‘T6’, ‘24V’). ‘T1’ to ‘T6’ are commoned
together using a 3-way bridge connector between either the ‘0V’ or the ‘24V’
terminal.
For the analog channels, labels identify the appropriate terminal on the
double-deck namely:
Top deck: ‘CH1A’ through ‘CH6A’
Bottom deck: ‘CH1B’ through ‘CH6B’