Gardner Denver PUREAIR EWD99E, Руководство по эксплуатации и обслуживанию

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3. In the top line, “ AUTO RESTART ” is displayed. The bottom line will indicate either ”OFF” or ”ON”
The factory setting is ”OFF”, and the controller will display a power failure shutdown after power has
been restored.
Set this feature to ON when it is necessary to have the compressor automatically restart after a
power interruption. There will be a brief delay, then the control resumes the mode it was in prior to
the interruption. This feature shall only be enabled when the owner determines that it is safe to do
so. It is recommended that compressor access be limited to only trained service personnel when
this feature is used.
4. This step is only encountered if the AUTO RESTART function was set to ON in the previous step. In
the top line, “
RESTART DELAY ” is displayed. The bottom line will indicate a time between 5 and 60
seconds. It is factory set at 10 seconds. This is the amount of delay introduced before restarting
after power has been restored. Set it as desired to allow for power to stabilize before starting
compressors.
5. The display now reads “ JOG MOTOR? ” and indicates the amount of time to energize the starter.
Adjust with the [+] or [-] key to the smallest value needed to bump the motor and check rotation. 0.1
o 0.2 seconds is normally adequate for factory-furnished full-voltage starters; Wye-Delta or remote
starters may require a little more time. Set back to zero to proceed to the next step.
6. In the top line, “ AUX SD MESSAGE ” is displayed. The bottom line will display the message which
will appear if power is removed from the shutdown input on the optional expansion board. Select the
most appropriate message for user-furnished shutdown devices, and press [ENTER] to proceed.
7. This completes the unit setup adjustments. The controller will return to the main adjustments menu.
OTHER CONTROL FEATURES
Auto restart after power failure - The AUTO SENTRY W controller normally displays “SHUTDOWN -
POWER FAILURE” after power has been interrupted and restored. Press the [STOP/RESET] key and
select an operating mode to restart the compressor.
If programmed for automatic restart, the controller pauses and begins counting down when power is
restored. This time is adjustable in the programming steps noted above. This must be at least several
seconds, but may be set longer to allow other plant loads to start up first. After the countdown is
complete, the controller resumes the mode of operation prior to the power interruption.
When auto restart is enabled, the green power indicator will blink whenever power is on. With auto
restart disabled, the power indicator lights steadily while power is on.
SEQUENCING COMPRESSORS WITH THE AUTO SENTRY W
An accessory expansion board, part number 301EWC1173, is required in each controller for sequencing
operation. This accessory is included with the AUTO SENTRY W controller installed in your package.
Sequencing compressors with the AUTO SENTRY W controller is as simple as plugging in a telephone to
a wall jack. The only item required to make the system functional is a standard telephone cable identical
to cables that connect nearly every telephone to its wall jack. One less cable than the number of
compressors to be sequenced is required. For example, to sequence four compressors, three cables are
required. A kit, 200EAP752, is available which contains all material needed to sequence up to five
compressors. This kit contains 500 feet of cable, eight modular connectors, and a crimping tool to install
the connectors.