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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Series 92 For A/C Modulating Service Gen II Installation, Operation Maintenance Manual Location: assembly/manuals Series 92 A/C Modulating Svc Manual Gen II Rev. A 11/15/19 Page 1 of 26...
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 ATEX Requirements ..................25 Maintenance ....................... 26 Spare Parts ..................... 26 DHC-100 Introduction The second generation 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 92 Electric Actuator Introduction Description The Series 92 electric actuators feature a reversing ac motor, with a permanently lubricated gear train, and hardened steel spur gears. These actuators are equipped with independently adjustable limit switches, declutchable manual override, beacon position indication, thermally bonded powder coat finish with stainless steel trim, ISO mounting, 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 #0107BV 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 Operation Manual Override Operation Reference Drawing #289S92 Models S-92, A92, & B92 Pull up the declutching knob (Part #18) and apply a 5/8" open end wrench to exposed flats and rotate within labeled limits as indicated by arrows. To re-engage simply rotate actuator shaft in the opposite direction until declutching knob drops back down into position.
ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 Calibration Outline Diagram Location: assembly/manuals Series 92 A/C Modulating Svc Manual Gen II Rev. A 11/15/19 Page 9 of 26...
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 MODE button is pressed, the unit will switch to the next function and the appropriate LED indicator will turn on to let the user know which function is selected.
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 input is connected backwards.
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 appropriate relay option module is installed, the Fault relay output on the option module will turn off (indicating a fault) when any of the Fault indicators turn on or flash.
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 FEEDBACK SIGNAL INPUT Input Voltage: 0 to 2.5 VDC External Feedback Potentiometer: 1K ohm POWER SUPPLY OUTPUTS +15V OUT (J2-8): 100mA maximum (not including option module) +5V OUT (J2-7): 20mA 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 Jumper wire on J-7 terminal Install jumper wire on J-7 No response from unit, and block is missing. terminal block. no response from the adjust ( and ) or Mode Auto/Manual station is Check wiring on buttons.
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 PROBLEM POSSIBLE CAUSES REMEDIES Exposure to water from Install drip loop at conduit conduit entrance. entrance. Exposure to water from Inspect and/or replace unsealed actuator housing. actuator housing gasket; use actuator with proper sealing.
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ASAHI/AMERICA, INC 655 ANDOVER STREET LAWRENCE, MA. 01843 TELEPHONE 800-343-3618 the responsibility of the furnishing distributor to provide translated copies of this O & M manual 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.