Woodward MicroNet TMR 5009, Installation/Hardware Manual

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5009 Installation/Hardware Manual 85580V2
38 Woodward
Each ATM connects to the control’s MPU & Analog I/O modules through
individual cables, and provides a common cage-clamp terminal connection for
customer field wiring. Figures 4-2 and 4-3 illustrate the different input wiring
configurations based on the type of speed sensing probes used.
Wiring Notes:
•
Refer to Figures 4-21 and 4-22 for Speed Sensor wiring connections on the
ATMs.
•
Each Speed input channel can only accept one MPU or one Proximity probe
at a time.
•
MPUs only—Jumpers must be added to each channel as shown in Figure
4-2 to allow the “C” analog module to sense speed.
•
Proximity Probes only—Individual 12 Vdc and 24 Vdc sources, with isolation
diodes on the power, common, and output source lines, are provided with
each speed input to power system proximity probes (100 mA fuses are used
on the 24 V output, the 12 V is current limited to 100 mA and located on the
ATMs).
•
Proximity Probes only—External pull-up resistors are required when
interfacing with an open collector type of proximity probe.
•
It is recommended that twisted shielded wiring be used between each probe
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”).
•
ATM terminals accept wires from 0.08–2.5 mm² (27–12 AWG).
NOTE
If the speed signals are not within the following limits, the 5009 control will
respond with a speed sensor frequency error during the program checking
procedure.
(TxMxR)/60 must be < 25 000 Hz
T = Gear Teeth
M = (Overspeed Test Limit Setting x 1.02)
R = Gear Ratio
NOTE
If the MPU device is not providing a voltage greater than 1.5 Vrms, the MPU
device should be moved closer to the gear where speed is being monitored.
The following graph shows the minimum voltage necessary to detect speed
at the various frequencies.