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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Series 94 Actuator For A/C Modulating Service Installation, Operation Maintenance Manual File: assembly/manuals/Series 94 Gen II A/C Modulating Svc Manual Rev. A 11/19/19 Page 1 of 27...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Troubleshooting ....................24 Maintenance ....................... 27 Spare Parts ..................... 27 DHC-100 Introduction The DHC-100 is a high performance digital positioner intended to control AC actuators, providing 450 points of resolution with quarter turn actuators ranging from 2 sec to 120 sec and rated for 25% duty or more.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Series 94 Electric Actuator Introduction Description The Series 94 electric actuators feature a reversing,capacitor run motor, and a permanently lubricated gear train. These actuators are equipped with integral thermal overload protection (AC models) with automatic reset, independently adjustable limit switches, declutchable manual override, visual position indication, Zytel FR50 enclosure with stainless steel trim, ISO bolt circle, and 2 (two) ½”...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Type 21 Ball Valve Position the valve and the actuator to corresponding positions (either OPEN or CLOSED). The flats on the actuator shaft extension indicate valve position Type 21 Ball Valves (See Drawing #0106BV sizes ½” – 2”) Install mounting bracket #3 to actuator #2 using bolts #8 and washers #9.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 indicates disc orientation). Install bolts #5, washers #6 and nuts #7 and tighten evenly. Flats on actuator shaft indicate valve position. (Disc Orientation) CAUTION: If mounted unit is installed other than straight up, the actuator should be supported independently to prevent side loading and loosening up of fasteners.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Operation Manual Override Operation Reference Drawing #279QM Push down on handle (Part #34) and rotate within labeled limits. To re-engage simply rotate actuator handle in opposite direction until it moves up and re-engages.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 QuickCal Procedure The following is a quick calibration procedure. For more details regarding the calibration and features of your DHC-100, please see the pages following this procedure. General The MODE button selects a particular function, or mode, and the indicator for the selected mode turns on steady.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 selected, the LOSS OF COMMAND feature is not available, so proceed to step Push the MODE button until the “LOSS OF COMMAND” LED is illuminated; this sets the actuator to a predetermined position upon loss of command. Use the ...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Please read the following pages to ensure that ALL of the selectable features are understood and selected if required. Power / Signal (J2) Power is connected to pins 1, 2, & 3 as shown in the wiring schematic. The fuse installed on the unit is rated for maximum output current that can be safely delivered by the AC outputs.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 enables normal operation of the DHC-100 and must be installed if the external override functions are not used. Mode The MODE button is used to select the desired function of operation. When the...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 RESISTANCE OPERATION > 4.3K ohms 3.3K ohms ±5% LATCH 2K ohms ±5% OPEN 1.2K ohms ±5% CLOSE 510 ohms ±5% STOP The OPEN function will operate the motor in the open direction as set by the OPEN mode, while the CLOSE function operates the motor in the closed direction as set by the CLOSE mode.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 to override the analog command. The AUTO indicator will flash whenever the unit is being controlled by the communications module. Manual/FB Pot Cal The MANUAL/FB POT CAL function allows manual operation of the actuator by ...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 with the CLOSE function, upon selecting the OPEN function, the actuator will move to the previously set open position. Once the desired position is set, the DHC-100 will automatically associate a command signal input of 5V, 10V, 20mA, or 100% to the open position.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Loss of Command When using 1-5V, 2-10V, 4-20mA, or a Digital input type for the command signal, the DHC-100 will detect when the command signal is lost or out of range. A loss of command condition is detected whenever the input is disconnected, the input becomes less than 0.75V (for 1-5Vinput), 1.5V (for 2-10V input), or 3mA, or if the...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Fault Indicators The DHC-100 detects various fault conditions that prohibit the unit from controlling the actuator. A combination of the three Fault indicators (red, yellow, and green) will turn on or flash to indicate a specific detected fault. If an...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Motor 2 No Motion (stall) A fault is detected when no actuator motion is detected while the Motor 2 output is turned on. The fault can be cleared in the same manner as a Motor 1 Stall (see above).
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 stall. To avoid this condition, the limit switches must be set outside of the operating range set by the CLOSE and OPEN functions. Electronic Brake Feature The Electronic Brake feature of the DHC-100 provides highly reliable and accurate braking of the motor, and it is a key element in achieving high resolution.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Option Modules Various option modules can be plugged into the DHC-100 option module connector, J3. Option modules provide additional features such as position feedback signals, auxiliary switch outputs, or digital communications. Contact the factory for the latest available modules.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 External Feedback Potentiometer: 1K ohm POWER SUPPLY OUTPUTS +15V OUT (J2-8): 125mA maximum (not including option module) +5V OUT (J2-7): 5mA maximum NOTE: Do not connect these outputs to other power supplies.
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Troubleshooting PROBLEM POSSIBLE CAUSES REMEDIES Manual override engaged. When the manual override is engaged, the motor will run, but no output will be observed until the manual override re-engages with...
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 PROBLEM POSSIBLE CAUSES REMEDIES Jumper wire on J7 Install jumper wire on J7 terminal block is missing. terminal block. No response from unit (MANUAL / FB POT CAL light is on.)
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 PROBLEM POSSIBLE CAUSES REMEDIES Closed and open Set closed and open Actuator does not positions are set to the settings; refer to "Close" respond to input signal. same position. and "Open" modes in (FAULT indicator is off.)
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Maintenance Disconnect power! NEVER REMOVE ACTUATOR COVER WHILE CIRCUITS ARE LIVE! CAUTION: It is imperative for reducing the chance of electrical shock, and to prevent ignition of hazardous atmospheres that you Disconnect power before any maintenance or repairs are performed.
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