Document reference MAMPS-HW/E HARDWARE MANUAL
Edition 18 - March 2022 VM600 machinery protection system (MPS)
10 - 13
Configuring the four local relays on the IOC8T
CONFIGURATION OF AMC8 / IOC8T CARDS
10.3Configuring the four local relays on the IOC8T
Connector J4 of the IOC8T card has terminals for the following four relay outputs:
• RL1 – Pins 1, 2 and 3 on connector J4
• RL2 – Pins 4, 5 and 6 on connector J4
• RL3 – Pins 7, 8 and 9 on connector J4
• RL4 – Pins 10, 11 and 12 on connector J4.
Specific alarms can be attributed to these relays using the VM600 MPSx software.
NOTE: Refer to the relevant manual for further information: VM600 MPS1 software
manual or VM600 MPS2 software manual.
As explained in 9.4.2 Operation of relays, micro-switches must be set on the IOC8T card to
configure each relay as normally energised (NE) or normally de-energised (NDE).
See Figure 10-10 for the position of the micro-switches on the IOC8T card.
10.3.1 Relay terminology
See 9.4.1 Relay terminology.
10.3.2 Operation of relays
See 9.4.2 Operation of relays.
10.4Configuring the eight DC outputs
As described in 5.3.2 DC outputs, the eight DC outputs (DC OUT 1 to DC OUT 8) on
connector J3 of the IOC8T card are typically factory configured to provide a current-based
output (4 to 25 mA).
NOTE: Contact Meggitt SA for information on configuring IOC8T card DC outputs to
provide voltage-based outputs (0 to 10 V).
The DC outputs (DC OUT 1 to DC OUT 8) have separate references/returns known as
Returns, available on Connector J3 (see 10.1 Definition of screw terminals on the IOC8T
card).
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