rotork FAIRCHILD PAX1, Руководство пользователя

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11
7. Commissioning
WARNING
NOTE: multiple power sources possible. Do not remove
cover in the field without first removing all power from
the unit.
Commissioning must be done in a safe area before
installing in a hazardous area.
Obtain special work permit before removing cover and
making powered adjustments in the field.
1. Setting end travel limits
1.1 Disconnect the analog input from the 4-20 mA
input terminals.
1.2 Turn on power to the unit.
1.3 Position the SETUP SWITCH to the TRAVEL LIMIT LO
setting.
1.4 Using the UP (EXTEND) and DN (RETRACT) buttons
under the cover, adjust the pressure regulator to its
lowest desired output pressure.
1.5 Press the SET button and wait for the Limit Lo LED
to turn from Green to Red and back to Green to set
the low pressure limit.
1.6 Position the SETUP SWITCH to the TRAVEL LIMIT HI
setting.
1.7 Using the UP (EXTEND) and DN (RETRACT) buttons
under the cover, adjust the pressure regulator to its
highest desired output pressure.
1.8 Press the SET button and wait for the Limit Hi LED
to turn from Green to Red and back to Green to set
the high pressure limit.
1.9 Position the SETUP switch to the OPERATE/PULSE
or OPERATE/ANALOG to operate the actuator
normally.
1.10 When in the OPERATE/PULSE mode, the actuator
will respond to external pulse control inputs and
will stop when the pressure regulator reaches
either pressure limit. The LIMIT LO and LIMIT HI
LEDs will change from Green to Red when the
limit is reached. The internal UP (EXTEND) and DN
(RETRACT) push buttons will respond likewise.
1.11 When in the TRAVEL LIMIT/LO or HI, mode, the
external pulse control inputs are disabled. The
internal UP (EXTEND) and DN (RETRACT) push
buttons will be active and will ignore the previous
pressure limits so that new limits may be set beyond
the previously set limits. The LIMIT LO and LIMIT HI
LEDs will continue to operate from the previously
set limits until new limits are set.
2. Setting Analog Control Current
2.1
Connect a 4-20 mA signal source to the 4-20 mA
input terminals.
2.2 Turn on power to the unit.
2.3 Set SW1 to 4-20 mA.
2.4 Position the SETUP SWITCH to the TRAVEL LIMIT LO
setting.
2.5
Using the UP (EXTEND) and DN (RETRACT) buttons
under the cover, adjust the output pressure to the
lowest desired pressure.
2.6
Apply the desired control current to the Analog
Control input terminals for this pressure setting.
2.7 Press the SET button and wait for the Limit Lo LED
to turn from Green to Red and back to Green to
set the low travel limit and corresponding control
current.
2.8
Move the SETUP SWITCH to the TRAVEL LIMIT HI
setting.
2.9 Using the UP (EXTEND) and DN (RETRACT) buttons
under the cover, adjust the output pressure to the
highest desired pressure.
2.10 Apply the desired control current to the Analog
Control input terminals for this pressure setting.
2.11
Press the SET button and wait for the Limit Hi LED
to turn from Green to Red and back to Green to
set the high travel limit and corresponding control
current.
2.12 Position the SETUP switch to the OPERATE/
ANALOG to operate the actuator from the Analog
Control input terminals.
2.13 ERROR SIGNALS – If both the Hi Limit and Lo
Limit LED’s blink red, then an error has occurred
in setting the Analog Control signal. The most
common error is setting the Lo and Hi Limit and
forgetting to change the control current. In this
case, the Lo Limit and Hi Limit are set with the same
current. This signal also occurs if the difference in
control current between the Lo Limit and Hi Limit is
less than 4 mA. Correcting either the Lo Limit or Hi
Limit setting or both will resolve the problem.
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