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Record Drive Set-up
Before Test
Circle One
JP2
SPD CUR
JP4
ARM TACH
JP8
Hi
JP9
A
: :
115 Vac
Operation
Basic Armature Circuitry Checkout
After the Focus is wired as shown on the previous page and the jumper set as indicated
above, 115 Vac power could be applied and the Focus should cause the light b
v
ary in brightness from nothing to full brightness. One could measure the voltage
across the bulb and it should be about 90 Vdc at maximum brightn
verify the basic Start/Stop, Speed command, Power Supply, Regulator and Powe
Sections.
Field Supply Checkout
If one wants to check the Field Supply, power should be rem
moved over to the F+ and F- terminals (use a 75 W bulb or
greater than 75 W could permanently dam
application of power, the light b
the light bulb should measure about 100 Vdc.
If the Focus passes these basic tests, the drive should be OK and the drive
should be able to run a good motor at least in Armatu
Reset jumpers back to the "Before Test Recorded Settings" except for JP4 and
check.
If the motor has a shunt field, it should m
200 ohms if Nameplate indicates 200 Vdc Field
100 ohms if Nameplate indicates 100 Vdc Field
B
EFORE
Low
B
C
D
230 Vac
ulb should light to full brightness and the voltage across
easure at least:
performing Light bulb test
Test
JP2
SPD
JP4
ARM
JP8
Low
JP9
None
: :
115 Vac Operation
oved and the light bulb
less for the field. Use of
age the Field rectifiers). Then upon
re Voltage feedback (JP4 in ARM).
ulb to
ess.
This would
r
re-
Page 61
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