TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook DG-TT7-K, Руководство по эксплуатации

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MULTIXPLO AND MULTITOX DETECTORS
OPERATING MANUAL
NOSP17665
Revision 02a
21
The 20mA current loop must be supplied with a PLC. The current return must be connected to the
0V at the level of the L- terminal. To proceed, please connect the 4 (V-) and 6 (L-) terminals at the
terminal block level of the device.
4.3.3.3 4-wires connection (isolated power)
When using a 4 wires connection, the current loop is provided by the input module or PLC. The
loop (L + and L-) is optically isolated from the detector. 4-20mA or 0-22mA input module of the
PLC must power up the current loop with, at least 8V at the terminal level.
4.3.4 Relay (option)
An optional card with 3 relays can be added on the detector.
The output relays can be connected to the detection unit or warning devices.
For the network version, the optional relay card cannot be installed.
Each relay can be configured:
•
normally closed or normally open.
•
on one or more states of the detector (fault, permanent Inhibition, alarms).
Relays configured at factory setting: refer to § 6.8.6.1
Fire panel or control system