23
VOLTAGE SELECTOR SWITCH SW1
LOCATED ON TOP OF THE CIRCUIT
BOARD MUST BE SET TO THE VOLT-
AGE LISTED ON YOUR DATA PLATE
(FIGURES 1 O R 2), OR DA MAGE TO
MOTOR WILL RESULT.
c) Ensure voltage selector switch is set to 115
VAC or 230 VAC as indicated on data plate
(Section 2).
d) If new c ircuit board has b een r eplaced
ensure DIP switche s SW2 an d SW3 ar e
set as needed for pro per op eration ( Sec-
tion 2).
e) Remove ECC from pump.
WARNING
USE EX TREME CAUTION. FULL LINE
VOLTAGES ARE PRESENT ON ARE AS
OF THE CIRCUIT BOARD.
3. Disc onnect J5 (F igure 4 ) an d connect a 4- 20
mA current source (or 1-5 VDC) to input signal
(high and low) connection at four-position con-
nector located under PCB.
WARNING
USE EX TREME CAUTION. FULL LINE
VOLTAGES ARE PRESENT ON ARE AS
OF THE CIRCUIT BOARD.
4. Apply AC power to ECC.
5. Apply a 4 mA (1 VDC) control signal and allow
motor to run until it stops. Disconnect power.
6. Manually turn
pump
stroke adjust to a position
of 0% for direct-acting or 100% for reverse-act-
ing.
7. Install ECC to pump. Do not rot ate ECC shaft.
If necessary, slightly rotate pump coupling for
proper engagement with ECC drive pin. Install
and tighten mounting bolts.
8. Using a s crewdriver, rotate motor s haft to turn
pump stroke adjust to minus 1% (this is 1 per-
cent below 0% reading, shows as “9” on most
pump micrometer rings). (Max Roy pump has
mechanical stops).
9.
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 C R6). Adjust lower limit LED (CR3) until
just on (VR3), if needed. Adjust
feedback zero
pot (VR5)
to 4 mA (1 VDC), if needed.
NOTE
The MaxRoy B, Milr oyal B, C, G, MacRoy
G, and D use s a 20 :1 gearbox. It req uires
200 tu rns at the actuator ha ndwheel to
adjust the pu mp str oke 10 tu rns (0 % to
100%). The Milroyal D uses a 5:1 or 12 :1.
10. Manually turn pump stroke adjust to a position
of 100% (101%) for direct-acting or 0% (-1%)
for re verse-acting. ( The Max Roy pu mp h as
mechanical stops).
11.
High signal adjust:
Apply 20 mA (5 VDC) sig-
nal an d ad just
span p ot ( VR1)
until bo th
motion light s are of f. Adjust upper limit LED
(CR4) until jus t on (VR4), if needed. Adjust
feedback span pot (VR6)
to 20 mA (5 VDC), if
needed.
12. Verify: Verify tra vel with lo w a nd h igh sign al.
Readjust feedback zero and feedback span if
needed for travel. Readjust limit s until limit
LEDs are just on, if needed.
13. Disconnect input and output control signal wir-
ing, reconnect all connectors an d ins tall ECC
cover.
4.8.1.3 Calibration C
Calibration C is a complete calibration. Performed
after replacing a circuit board with a new board that
was
not factory calibrated
. For example, A user
may want to move an ECC from a mRoy series of
pumps to a Milroyal B series. This procedure would
be used to no w set u p the M ilroyal B ECC. It is
important fo r the use r to understand that circuit
boards obtained from the manufacturer are pre set
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