Woodward MicroNet TMR 5009, Installation/Hardware Manual

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5009 Installation/Hardware Manual 85580V2
50 Woodward
Relay Jumper Configurations
Relay coil power should be supplied by the control. Three independent isolated
sources are diode selected (High Signal Selected) to power each DTM’s relay
coil. Jumper banks (four jumpers in one package) are provided on each DTM to
allow field selection of internal or external relay coil power. See Figures 4-13 and
4-15. If external relay coil power is supplied, the relay coil power jumper bank
must be moved from its defaulted INT. position to the EXT. position.
A DTM includes terminals and internal jumpers to allow its relay coils to be
powered by an external power source. This relay coil power configuration was
designed for systems which may not have the power sourcing capability to power
all system modules and relays (custom designed systems). The 5009 however,
has sufficient power to supply all unit modules and relays.
NOTE
To retain circuit integrity if an external power supply is used for relay coil
power, it must be an isolated 24 Vdc source, with ±5% regulation. When
using an external power source for relay coil power, it is recommended that
a start-up routine be utilized to remove the source during system power-up
and power down. This routine will guarantee that no relay is inadvertently
energized due to system power-up surges. (By using the DTM’s internal
relay coil power this start-up routine is automatically performed.)
With this system’s power configuration it is recommended that the control’s
internal power be used to supply the DTM’s relay coils at all times.
Field configurable jumpers are used on DTMs, to allow a relay’s latent fault
detection logic to be compatible with different levels of circuit power and to
choose which set of relay contacts to test (normally open or normally closed).
Each relay output has two banks of jumpers (multiple jumpers in one package).
One jumper-bank (a set of nine jumpers) is used to match the latent fault
detection (LFD) circuit with the circuit voltage being interfaced with. The second
jumper bank (a set of four jumpers) is used to select which set of relay contacts
(N.O. of N.C.) is tested by the LFD logic. During operation, only one set of relay
contacts (normally open or normally closed) can be tested. The set of relay
contacts tested should be same set of relay contacts used by the circuit
interfaced to. Refer to Figure 4-13. LFD can be jumper configured to be
compatible with the following circuit voltages:
•
18–32 Vdc circuit power (meets CE & UL ratings)
•
88–132 Vac circuit power (meets UL ratings only)
•
100–150 Vdc circuit power (meets UL ratings only)