Mechanical adjustment – Vestil EPT-30 User Manual
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Curtis PMC 1207/1207A Manual
34
3 — ADJUSTMENT OF PARAMETERS
MECHANICAL ADJUSTMENT
[1207 single-mode controllers only]
Five screwdriver-adjustable potentiometers (“trimpots”) allow mechanical ad-
justment of the main current limit, plug current limit, acceleration rate, maxi-
mum creep speed, and maximum speed (labeled “
LOW
”). The five trimpots are
accessed through holes on the adjustment panel, located under the sliding
protective cover on top of the controller. Adjustments are made with a small
insulated screwdriver.
The trimpot’s relative position indicates the approximate value over the
allowable range. For example: if the main current limit range is 20–250 amps,
position “0” corresponds to 20 amps, and position “4” to 250 amps. Setting the
pot halfway (at position “2”) corresponds to approximately 135 amps.
If you wish to adjust any of these parameters electronically, using the
programmer, its trimpot must be set to “
OFF
.”
NOTE
: On 1207 controllers with the MultiMode™ feature, the trimpots are
disabled at the factory.
S TAT U S
A C C E L .
L O W
C R E E P
P L U G
M A I N
4
OFF
1
2
3
0
4
OFF
1
2
3
0
4
OFF
1
2
3
0
4
OFF
1
2
3
0
4
OFF
1
2
3
0
L I M I T
SPEED
L I M I T
CURRENT