Accudyne Industries Milton Roy Milroyal Series, Инструкция по эксплуатации

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23 Installation, Operations & Maintenance Manual
SECTION 4 - MAINTENANCE
4. Remove P2 and connect DVM between
P2 pin 1 and P2 pin 2
(Figure 14)
. Loosen
screws to potentiometer to allow movement
of potentiometer gear without moving nylon
worm gear. Set potentiometer to 1.5K ohms
±100 ohms for Milroyal
®
B, C, and MACROY
®
pumps, 0.87 ohms ±0.1 ohms for mRoy
®
pumps
and 1.3 ohms ±0.1 ohms for MAXROY
®
and
Milroyal
®
D ECCs and re-tighten potentiometer
screws. This sets the resistance of the
potentiometer.
Figure 15. Potentiometer Connector P2 Pins
1 and 2
5. Install PCB (Paragraph 4.4.2) and perform
remaining adjustments.
USE EXTREME CAUTION. FULL
LINE VOLTAGES ARE PRESENT
ON AREAS OF THE CIRCUIT BOARD.
6. Disconnect J5 ( Figure 4 and connect a
4-20 mA current source (or 1-5 VDC) to input
signal (high and low) connection at four position
connector located under PCB.
USE EXTREME CAUTION. FULL
LINE VOLTAGES ARE PRESENT
ON AREAS OF THE CIRCUIT BOARD.
7. Apply AC power to ECC.
8. Apply a 4 mA (1 VDC) control signal and allow
motor to run until it stops. Disconnect power.
9. Manually turn pump stroke adjust to a
position of 0% for direct-acting or 100% for
reverse-acting.
10. Install ECC to pump. Do not rotate ECC shaft.
If necessary, slightly rotate pump coupling for
proper engagement with ECC drive pin. Install
and tighten mounting bolts.
11. Using a screwdriver, rotate motor shaft to
turn pump stroke adjust to minus 1% (this
is 1 percent below 0% reading, shows
as “9” on most pump micrometer rings).
(MAXROY
®
pump has mechanical stops).
12. Low signal adjust: Disconnect motor lead, J1.
Apply a 4 mA (1 VDC) signal and adjust zero
pot (VR2) until both motion lights are off (CR5
and CR6). Adjust lower limit LED (CR3) until
just on using (VR3), if needed. Adjust feedback
zero pot (VR5) to 4 mA (1 VDC), if needed.
NOTE
The MAXROY
®
B, Milroyal
®
B, C, G,
MACROY
®
G, and D uses a 20:1 gearbox. It
requires 200 turns at the actuator handwheel to
adjust the pump stroke 10 turns (0% to 100%).
The Milroyal
®
D uses a 5:1 or 12 :1.
13. Manually turn pump stroke adjust to a position
of 100% (101%) for direct-acting or 0% (-1%)
for reverse-acting. (The MAXROY
®
pump has
mechanical stops.)
14. High signal adjust: Apply 20 mA (5 VDC) signal
and adjust span pot (VR1) until both motion
lights are off. Adjust upper limit LED (CR4) until
just on (VR4), if needed. Adjust feedback span
pot (VR6) to 20 mA (5 VDC), if needed.
15. Verify: Verify travel with low and high signal.
Readjust feedback zero and feedback span
if needed for travel. Readjust limits until limit
LEDs are just on, if needed.
16. Disconnect input and output control signal
wiring, reconnect all connectors, and install
ECC cover.