Module Relay Wiring, Supervision

F3200 Installation & Programming Manual		Document No: LT0122
Installation & Wiring

8.6	MODULE RELAY WIRING

The 8 Relay Module relays each have one set of voltage free change-over contacts (ie one pole) accessible via screw terminals, to switch plant equipment. The second pole of each relay can be accessed by fitting a 3-way de-mountable connector block pair CN0488 and CN0206.

There are two sets of four inter-connected, voltage free, looping terminals per module that can be used for looping supplies onto relays or loads.

If the load switched is inductive e.g. a solenoid coil, a suppression diode must be fitted as shown in Fig 8.6.1.

Supervision

Supervision of the field wiring from the FIP to the load is shown in Fig 8.6.1. This only works for a single load, or multiple co-located loads wired in parallel (though for multiple co-located loads, the supervision will not detect a fault if one load becomes disconnected). It requires the load or an EOLR to be connected between the relay COM terminal and the FIP 0V, and the supervision link on the module to be fitted in the "S" position. If the COM output does not ‘see’ a supply voltage or open circuit when the relay is activated, then the relay must be programmed to not supervise the load when actived (requires V2.09 or greater software). An example of supervising a circuit of multiple, separately located loads using 2 poles of one relay is shown in Fig 8.5.3.

+VBF	o─────┐
	│
┌─	│
┌─	│
NO	o─────┘

RLn NC	o	INDUCTIVE LOAD
			(SEE NOTE)
COM	o───────────────────────────────────────────┬───────────┐
└─		┌─┴─┐		╒╧╕
S		│	│	│ │
───o o		└─┬─┘		└┬┘
0V	o───────────────────────────────────────────┴───────────┘
a.			SUPPRESSION
a.				DIODE

Note: For a load of less than 400 Ohms a diode of suitable current rating must be wired in series with the load at the load as shown in b. below.

──────┬───┐		──────┐
INDUCTIVE┌─┴─┐╒╧╕		┌┴┐
LOAD│	││ │DIODE	│ │DIODE
└─┬─┘└┬┘		╘╤╛

├───┘	OR		├───┐
┌┴┐		INDUCTIVE┌─┴─┐╒╧╕
│ │DIODE		LOAD│	││ │DIODE
╘╤╛		└─┬─┘└┬┘
0V ──────┘		0V ─────┴───┘

FIG 8.6.1

EXAMPLES OF MODULE RELAY WIRING WITH SUPERVISION

Page 8-20

5 July 2001

Issue 2.7

F3200 specifications

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Tyco F3200 manual Examples of Module Relay Wiring with Supervision

Models: F3200