Woodward MicroNet TMR 5009, Installation/Hardware Manual

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5009 Installation/Hardware Manual 85580V2
42 Woodward
Each actuator output can also be configured to drive single- or dual-coil
actuators. When configuring an output to drive into either type of actuator, the
output must be wired correctly (See Figures 4-6 and 4-7), and the control’s
program configured for the correct type of actuator. See Volume 3 for details on
programming actuator outputs.
Dither is selectable through the system’s engineering workstation, and is
available for either output. Dither is a low frequency (25 Hz) signal consisting of a
5 millisecond pulse modulated onto the control’s DC actuator-drive current to
reduce stiction in linear type actuators. Woodward TM-type actuators typically
require dither. See Volume #3 of this manual for details on adjusting dither.
Wiring Notes:
•
Refer to Figures 4-21 and 4-22 for Actuator Output wiring connections to the
ATMs.
•
When configured to drive a single coil actuator, user-supplied jumpers are
required between terminals 14 & 15 and terminals 44 & 45.
•
Maximum impedance for a 4 to 20 mA actuator output driver is 360 Ω
(actuator imp wire resistance).
•
Maximum impedance for a 20 to 160 mA actuator output is 45 Ω (actuator
imp wire resistance).
•
Each actuator driver senses its drive current to allow over- and under-
current alarms and shutdowns. Refer to Volume 1 of this manual for details
on defaulted values and changing them.
•
It is recommended that 0.75 mm² (20 AWG) or larger twisted/shielded wire
be used between each actuator and ATM.
•
Shields should be connected to earth ground at all intermediate terminal
blocks, as well as terminated at the control terminal block. The exposed wire
length, beyond the shield, should be limited to 25 mm (1”).
•
Do not place shielded wires in the same cable conduit with high-voltage or
large-current-carrying cables.
•
Cable shields must be electrically continuous from the signal source to the
point the signal wire enters the 5009 Analog Terminal Module.
•
ATM terminals accept wires from 0.08–2.5 mm² (27–12 AWG) wire.
•
Actuator outputs are not isolated, so they should be not be connected to
non-isolated devices.
Figure 4-6. Example Single Coil Actuator Wiring Diagram