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コントローラー Dresser RCS Sure 100のPDF インストレーション・マニュアルをオンラインで閲覧またはダウンロードできます。Dresser RCS Sure 100 6 ページ。
ページを印刷するTo prevent the ignition of hazardous atmospheres,
do not remove actuator cover while circuits are live.
Operation
Power On:
The electric motor drives the gear train, which in
turn winds the spring and turns the device. An internal limit switch
de-energizes the motor and the brake, which holds the return spring
and device in position.
Power Off:
When the current is interrupted by either a control
signal or a power failure, the return spring drives the device to its
original position.
Note:
It is recommended that the actuator be driven electrically in
both directions for normal operation to prolong cycle life.
Maintenance
Gear train is permanently lubricated at the factory for the average life
of the actuator. No further attention is required.
Thermal Overload
The internal thermal overload switch de-energizes the motor and
prevents overheating of the motor windings due to excessive
operation, stalling or high ambient temperatures.
D u t y C y c l e
The maximum duty-cycle to be expected without interruption by
thermal cut-off at an ambient temperature of 65C° is 25% (3 "OFF"
times for every 1 "ON" time) for the 10 second design, and 50% (1
"OFF" time for every 1 "ON" time) for the 30 second design.
Storage
The Surepowr actuator must be stored in a clean, dry, temperature
controlled building which is protected from the weather. Precautions
shall be taken to prevent condensation inside or outside the actuator.
If there is insufficient external temperature and humidity control,
internal heaters must be installed and energized to protect the unit
against condensation from extreme temperature variations. The
actuators shall be stored off the floor on suitable pallets and must be
covered with an unsealed dust protector allowing side and bottom
ventilation.
CAUTION
Isolation Relays
To operate multiple actuators in parallel from a single signal requires
isolating relays in the field wiring. Consult Factory.
Troubleshooting (New Unit)
Note:
Most actuator problems occur due to incorrect cam/travel limit
switch setting, or the use of an external travel stop on the device
that the actuator is operating.
Problem 1:
Actuator is receiving electric power but the motor
does not respond.
Instructions:
1a. Check actuator nameplate to insure correct model,
voltage type and spring return direction.
1b. Check all wiring against installation wiring diagram.
1c. Actuator with clockwise fail position: Using a volt
meter, check that power is available between terminals
1 and 2. Then check the voltage between terminal
1 (common) and the two legs of the motor and capacitor.
The meter should indicate a value equal to or greater than
the supply voltage indicated on the actuator nametag.
Actuator with counter-clockwise fail position: Using a volt
meter, check that power is available between terminals 1
and 3. Then check the voltage between terminal 1 (common)
and the two legs of the motor and capacitor. The meter
should indicate a value equal to or greater than the
supply voltage indicated on the actuator nametag.
If power is not present at the motor or capacitor leads:
• Cam adjustments are required
• Switch malfunction
• Improper wiring
Problem 2:
Actuator is receiving electric power but the motor
only hums.
Instructions:
2a. Perform steps 1a through 1c listed above.
2b. Check to insure the brake is completely disengaged
when power is applied