BECKWITH ELECTRIC M-2601, Instruction Book

Page: 50 / 70

6–3
Test Procedure –6
8. Raise the input voltage until the red
LOWER LED lights. Observe that the
lower relay picks up and lights the
LOWER indicator lamp in one minute
or less.
9. Lower the input voltage until the red
RAISE LED lights. Observe that the
raise relay picks up and lights the
RAISE indicator lamp in one minute or
less.
10. Resistive LDC check:
a. Apply a current of 200 mA 0° to
the Line Current Input.
b. Set the Resistive LDC to +12 V.
c. Verify that the raise relay closes,
causing the RAISE indicator lamp
to light.
d. Raise the input to above 132 V
ac, and verify that the RAISE indi-
cator lamp extinguishes, and the
control RAISE LEDs are extin-
guished.
e. Set the resistive LDC to –12 V.
f. Verify that the lower relay closes,
causing the LOWER indicator lamp
to light.
g. Lower the input to below 108 V
ac, and verify that the LOWER in-
dicator lamp extinguishes, and that
the control LOWER LEDs are ex-
tinguished.
h. Set the Resistive LDC to 0 V.
11. Reactive LDC Check:
a. Apply a current of 200 mA 90° to
the LDC current input.
b. Set the reactive LDC to +12 V.
c. Verify that the raise relay closes,
causing the RAISE indicator lamp
to light.
d. Raise the input to above 132 V
ac, and verify that the RAISE indi-
cator lamp extinguishes, and the
control RAISE LEDs are extin-
guished.
e. Set the reactive LDC to –12 V.
f. Verify that the lower relay closes,
causing the LOWER indicator lamp
to light.
g. Lower the input to below 108 V
ac, and verify that the LOWER in-
dicator lamp extinguishes, and that
the control LOWER LEDs are ex-
tinguished.
12. Counter Check (2601, 2602):
a. Adjust input voltage until the unit
initiates a Raise or Lower.
b. Press the button connected to the
counter input.
c. Using SLIMcom™, confirm that the
presettable and resettable counter
values increment when the button
is pressed.
13. Current Sense Check (2603):
a. Adjust input voltage until the unit
initiates a Raise or Lower.
b. Push the current sense switch.
c. Raise or Lower relay should be
dropped.
d. Using SLIMcom™, confirm that the
presettable and resettable counter
values increment when the button
is pressed.
14. Upper/Lower Blocking Check:
a. Apply a current of 200mA 0° to
the Line Current Input.
b. Set the resistive LDC to +24 V.
c. Set the Upper Voltage Limit to
132 V.
d. Verify that the red RAISE LED is
on.
e. Slowly raise the input voltage until
the RAISE LED extinguishes.
f. Confirm that this occurs at 132.00 V
K
0.3%.
g. Apply a current of 200 mA 180°
to the LDC current input.
h. Set the resistive LDC to –24 V.
i. Set the Lower Voltage Limit to
108 V.
j. Verify that the red LOWER LED
lights.
k. Slowly lower the input voltage un-
til the LOWER LED extinguishes.
l. Confirm that this happens at 108 V
K
0.3%.