13-11-614 Page 37
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 23, and connect the pair of wires from the switch to terminals 9 and 23.
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.
If remote control is not desired, this input must be jumpered to operate the compressor. Connect a
jumper between terminals 9 and 23.
Auxiliary Shutdown
- See “External Device” details, page 28.
Alarm Relay
- The expansion board is provided with an alarm relay which may be connected to a
remote mounted indicator light, horn, or into a PLC input of a plant wide control system. The contact is
commercial rated 2 amps at 120 volts. The relay is turned on whenever there is a shutdown condition
requiring service at the compressor, and remains off during normal operation, stopping, or power off
conditions. The external connections from the controller are from an isolated form C (single-pole, double-
throw) contact. This allows control of either a ”compressor okay” or a ”compressor shutdown” remote
indicator.
Summary of Contents for ROTORCHAMP EWF99C-100
Page 7: ...13 11 614 Page 7 Figure 1 2 PACKAGE ILLUSTRATION AIR COOLED 309EWF797 A Ref Drawing ...
Page 8: ...13 11 614 Page 8 Figure 1 3 PACKAGE ILLUSTRATION WATER COOLED 310EWF797 A Ref Drawing ...
Page 9: ...13 11 614 Page 9 Figure 1 4 AIR COOLED SCHEMATIC 307EWF797 A Ref Drawing ...
Page 10: ...13 11 614 Page 10 Figure 1 5 WATER COOLED SCHEMATIC 308EWF797 A Ref Drawing ...
Page 29: ...13 11 614 Page 29 Figure 4 2 FLOW CHART FOR SETUP PROGRAMMING 300EWC1255 Ref Drawing ...
Page 43: ...13 11 614 Page 43 303EWF546 A Ref Drawing Page 2 of 2 ...
Page 45: ...13 11 614 Page 45 304EWF546 A Ref Drawing Page 2 of 2 ...
Page 47: ...13 11 614 Page 47 305EWF546 A Ref Drawing Page 2 of 2 ...
