TM 5-3895-374-24-1
GP470FA
3.
Use the
] or
] keys to change the proportional band value.
4.
Press the [FUNCTION] key three more times until the lower display reads PB 2.
5.
Use the
] or
] key again to change proportional band 2 value. PB and PB 2 should always be set the
same to achieve balanced control.
6.
Press [DISPLAY] to store the new settings and return to normal operation.
CYCLE TIME: Multiplied by the controller output (0 to 100% Open or 0 to 100% Close) to determine the actual on time of
the output relays. Faster actuators will require shorter cycle times to prevent excessive overshoot. Suggested cycle times
for standard actuators are listed below.
Actuator
Cycle Time
B-C Medium Torque
10 seconds
B-C High Torque
5 seconds
Duff-Norton
2 seconds
Change cycle times, if required, by the following procedure:
1.
Press [SET UP] until the display reads SET UP TUNING.
2.
Press the [FUNCTION] key until the lower display reads CYC TI. The upper display will show the current cycle
time setting.
3.
Use the
] or
] keys to change the cycle time value.
4.
Press the [FUNCTION] once more until the lower display reads CYC2TI.
5.
Change cycle time 2 to the same value as cycle time 1.
6.
Press the [DISPLAY] key to store the new settings and return to normal operation.
INPUT FILTER: The DC200E controller includes an electronic input filter which can be used to compensate for
disturbances at the pressure tap. If the displayed value is erratic even when the controller is in MANUAL and the
damper is stationary, set the input filter to 1 or 2 using the following procedure. Maximum filter setting should not exceed
2. If the condition persists relocate the pressure tap.
1.
Press [SET UP] until the display reads [SET UP INPUT1].
2.
Press the [FUNCTION] key until the lower display reads FILTR1. The upper display will show the current filter
setting.
3.
Use the
] or
] keys to change the filter setting.
(page 3-43)
