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The expansion board also provides the data port for communications in sequencing. The expansion
board is pre-installed on any unit with factory-mounted Wye-Delta starters.
To install on other units, stack the expansion board over the main control board, and mount with the
hardware included. Use the cable to connect the expansion board to the main board. The AUTO
SENTRY W controller automatically detects the presence or absence of the expansion board, but 120V
input circuits must be connected to the expansion board for proper operation. Spare terminals are
provided at the control terminal strip in the box for connection of the following 120v circuits. Connect
either to unused existing terminals, or mark blank terminal locations for new points shown.
Connect from the expansion board plug to terminals as follows:
Expansion Plug
Panel Terminal
J1-1
8 (existing)
J1-2
no connection
J1-3
23 (new)
J1-4
24 (new)
J1-5
10 (existing)
J1-6
21 (new)
J1-7
20 (new)
J1-8
19 (new)
Remote On / Off
- Remote on-off control of the system requires only a simple two-wire control, with an
isolated contact suitable for 120 volts, 1 amp. This may be a switch, a timer contact, a relay contact, or a
PLC output. To connect, simply run the two wires to the control enclosure, remove the jumper (if present)
between terminal 9 and 31, and connect the pair of wires from the switch to terminals 9 and 31.
The air compressor will operate normally in its selected mode whenever this contact is closed (turned on).
Note that the keypad is always the master control; the [RUN] key must be pressed to place the control
into an operating mode. The remote is not capable of starting a unit after the [STOP/RESET] key has
been pressed to place the controller in the READY state. When the contact is opened (turned off),
operation depends on how the controller has been programmed and what it is doing prior to opening the
contact.
If the compressor was already stopped in automatic or sequence modes, it will remain stopped and will
not restart until the contact is closed. The display will flash the message “REMOTE STOP” to indicate
that it is waiting for the remote signal.
If the compressor was running in any mode when the contact was opened, and the remote response is
programmed for “IMMEDIATE”, the compressor will immediately unload and blowdown. After completion
of blowdown, the motors will stop, and the unit will be in the “REMOTE STOP” mode as indicated above.
If the compressor was running in any mode when the contact was opened, and the remote response is
programmed for “TIMED UNLOAD”, the compressor will immediately unload and blowdown. It will then
continue to run unloaded for whatever period has been programmed for “AUTO TIME” (or will complete
the remaining auto time if already blown down). After completion, the motors will stop, and the unit will be
in the “REMOTE STOP” mode as indicated above. This is the preferred setting for automatic remote
controls which may cycle in less than 1/2 hour, as the motor is always cooled evenly and rapid start
cycles are prevented.
Содержание PUREAIR EWC99C
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Страница 8: ...13 11 607 Page 3 Figure 1 3 AIR WATER SCHEMATIC 308EWC797 F Ref Drawing...
Страница 25: ...13 11 607 Page 20 Figure 4 2 FLOW CHART FOR SETUP PROGRAMMING 300EWC1255 Ref Drawing...
Страница 38: ...13 11 607 Page 33 Figure 4 4 WIRING DIAGRAM FULL VOLTAGE 305EWC546 B Ref Drawing Page 1 of 2...
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Страница 40: ...13 11 607 Page 35 Figure 4 5 WIRING DIAGRAM FULL VOLTAGE LESS STARTER 306EWC546 B Ref Drawing Page 1 of 2...
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