Woodward MicroNet TMR 5009, Installation/Hardware Manual

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5009 Installation/Hardware Manual 85580V2
52 Woodward
After all jumper-banks have been correctly positioned, mark the placement of
each jumper-bank on the DTM cover labels, located on each DTM’s outer cover.
See Figure 4-14.
Figure 4-14. DTM Labels
Wiring Notes:
•
Refer to Figures 4-23 through 4-26 for relay output wiring connections to the
DTMs.
•
Verify that each set of relay contacts meet the power requirements of the
circuit which it is being used with. Interposing relays are required in cases
where the interfaced circuit demands relay contacts with a higher power
rating. If interposing relays are required, it is recommended that interposing
relays with surge (inductive kick-back) protection be used. Improper
connection could cause serious equipment damage.
•
Verify system power is off before removing or installing any DTM jumper. All
jumpers are fragile, use caution when removing and installing DTM jumper-
banks.
•
Select internal or external relay coil power. If the control’s internal power is
used verify that the DTM’s “Relay Coil Power Jumper” bank is in the INT.
position. If external relay coil power is supplied, move the DTM’s “Relay Coil
Power Jumper” bank to the EXT. position and verify that the external source
is fully isolated. (Mark the DTM’s label to indicate jumper position.)
•
Verify if Latent Fault Detection (LFD) can be used with each relay output.
•
If LFD cannot be used with the relay output, verify that the relay’s LFD
jumper-banks are in their Disable positions. (Mark the DTM’s label to
indicate jumper position.) Alternatively an external resistor can be wired in
parallel with the load to allow LFD to be used with the relay output. In this
case it is the customer’s responsibility to calculate the required resistor
ratings and install it.
•
If LFD can be used with the relay output, move the relay’s LFD jumper-
bank to the correct circuit power position. Also select which set of relay
contacts (NO or NC) are to be tested by the LFD logic. Mark the DTM labels
to indicate jumper positions.
WARNING—HIGH VOLTAGE
Relay circuit power is also present on a DTM’s relay and cable connectors.
When using high voltage relay circuit power, it is recommended that care be
taken not to touch exposed connectors when replacing relays or cables. If
possible remove relay circuit power from all DTM relays before replacing any
DTM relay or cable.