Series S Solid-State Staging Controller Instruction Manual
10
Series S Solid-State Staging Controller Instruction Manual
11
Timing Trim Pot
2.5 Time Proportioning (Cycling)
Adjustment – Right Side
This adjustment is used to provide vernier control of
power between steps by time proportioning a step of
power. Up-down steppers will proportion the last ‘on’
step, and the circular stepper will add the next ‘off’
step and subtract the last ‘on’ step at the required
percentage time. Turning the adjustment fully
clockwise will provide the fastest rate.
Minimum setting (ccw) provides an ‘on-off’ differential
on each stage (no time proportioning). Maximum
cycling will give high resolution control, but will also
cause maximum wear on contractors. Forced hot
air heating systems will generally require some
time proportioning for best control. Water heating
will usually not require any time proportioning for
excellent results, and the adjustment can be set to
zero (ccw).
2.6 Staging Interval Adjustment
This adjustment is used to set the time delay between
steps. Counterclockwise is the minimum delay of 2.5
seconds, adjustable fully clockwise to a maximum of
12 seconds on the standard yellow card.
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Timing
SCAN
CALIBRATION
(CW = MORE ON)
STAGING INTERVAL
(CW = 12 seconds)
(CCW = 2.5 seconds)
TIME
PROPORTIONING
(CW = MORE PROPORTIONING)
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