Woodward MicroNet Simplex - Figure 8-8. Discrete Input Interface Wiring to a 24;12 Discrete FTM

Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 92
TB9
Jumper
(remove for
external
excitation)
+24VDC
TB6
1
25
2
Internal External
Field Contacts
48/24
Discrete
Combo
Module
26
TB8
50
49
24Ret
Channel 1
Channel 2
NC
TB10
91
92
Ground to
DIN rail
Cable
Sheild
Optional
External
Excitation
A
B
Figure 8-8. Discrete Input Interface Wiring to a 24/12 Discrete FTM
Configuration Notes:
 Refer to Chapter 13 for Discrete Input wiring.
 All contact inputs accept dry contacts.
 If the internal 24 Vdc is used, a jumper must be added to tie the internal 24 Vdc to the bussed power
terminal blocks (see Figure 8-8).
 If an external 24 Vdc is used, the common for the external 24 Vdc must be tied to the discrete input
common (see Figure 8-8). Power for contacts must be supplied by the control’s power supplies, or
the external power supply outputs must be rated to Class II at 30 Vdc or less and outputs must be
fused with appropriately sized fuses (a maximum current rating of 100/V, where V is the supply’s
rated voltage, or 5 A, whichever is less).
Discrete Outputs
The discrete outputs on the MicroNet Discrete I/O Smart-Plus module are non-isolated; the isolation takes
place in the 24/12 Discrete FTM. See Chapter 13 for field wiring of discrete output relays. Figure 8-9
illustrates an example of a discrete output wiring configuration.
Released