Peaktronics DHC-300 Troubleshooting Manual

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DHC-300
Quick Cal & Troubleshooting Guide
General
The MODE button selects a particular function, or mode, and the indicator for the selected mode turns on solid. Pushing
the MODE button saves any new setting of the current mode before switching to the next mode. The adjust up (▲) and
adjust down (▼) buttons are used to make adjustments to current mode. For more details regarding calibration and
features refer to the manual.
DIGITAL
4-20mA
1-5VDC
0-5VDC
0-10VDC
FAULT
(FLASHING)
1. Use the mechanical override to move the actuator to a mid-stroke position to allow for safe electrical operation of
the actuator while determining actuator rotation. If the actuator is outfitted with a local/remote station, select the
remote mode. CAUTION! Incorrect actuator rotation can cause damage to the actuator and/or valve.
2. To test the actuator rotation, apply 3-phase power with earth ground and verify that the DHC-300 is in the "Manual
Mode", and that the yellow "MANUAL/FB POT CAL" LED is illuminated. If not, immediately push the mode
button as required until the LED is illuminated (actuator will stop rotation in this mode). The LED may be flashing
(at different speeds) through the next several steps. This is expected and be will be explained.
3. Press the adjust up (▲) button to confirm that the actuator moves toward open as shown in "Direct Acting" above.
If not, turn all power off, reverse L1 and L2 power connections, and retest for correct actuator rotation.
4. Use the adjust buttons (▲ and ▼) to move the actuator and verify that the limit switches are set past the desired
open and closed valve positions, but not so far as to interfere with the mechanical end stops, if the actuator has this
feature. Then move the actuator to mid stroke.
5. If LED is solid, proceed to step 7.
6. If LED is flashing, loosen the gear on the actuator shaft and rotate the potentiometer gear until the LED is no longer
flashing, but on solid - this indicates the center of the potentiometer's travel. Note that the LED will flash at a
slower rate the farther away from the mid position it gets. Once the LED is on solid tighten the actuator shaft gear
and ensure that the gear engagement is tight and properly meshed.
PEAKTRONICS, Inc.

Quick Calibration Procedure

PEAKTRONICS
Digital High Resolution
AUTO
MANUAL / FB POT CAL
CLOSE
LAST
(BOTH OFF)
OPEN
AUX CLOSE OUTPUT
AUX OPEN OUTPUT
COMMAND TYPE
LOSS OF COMMAND
AUX POSITION OUT
CAL (STEADY ON)
1363 Anderson
Clawson, MI 48017
MODE
www.peaktronics.com
Phone (248) 542-5640
REFERENCE ROTATIONS
OPEN
actuator motion
DIRECT ACTING
OPEN
actuator motion
REVERSE ACTING
FAX (248) 542-5643
page
1 of 4
800-174B

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Summary of Contents for Peaktronics DHC-300

  • Page 1 CAUTION! Incorrect actuator rotation can cause damage to the actuator and/or valve. 2. To test the actuator rotation, apply 3-phase power with earth ground and verify that the DHC-300 is in the "Manual Mode", and that the yellow "MANUAL/FB POT CAL" LED is illuminated. If not, immediately push the mode button as required until the LED is illuminated (actuator will stop rotation in this mode).
  • Page 2 DHC-300 page 2 of 4 Quick Cal & Troubleshooting Guide 7. Push the MODE button until the “CLOSE” LED is lit solid. Use the adjust down (▼) button to drive the actuator completely closed so that the associated limit switch trips. Then tap the adjust up (▲) button to move the actuator just off the limit switch to the desired valve closed position.
  • Page 3 DHC-300 page 3 of 4 Quick Cal & Troubleshooting Guide PROBLEM POSSIBLE CAUSES REMEDIES No power Check power source. Excessive voltage applied to unit. Replace unit. No response from unit (All lights are off.) Blown or missing fuse Replace with appropriate fuse; see "Specifications"...
  • Page 4 DHC-300 page 4 of 4 Quick Cal & Troubleshooting Guide PROBLEM POSSIBLE CAUSES REMEDIES Actuator position is near closed or If an OTR-100 or OTR-101 option open. module is installed, set Aux Close and Aux Open positions; refer to "Aux Close Output"...

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