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13–10–613 SP Page 30
FIGURE 4–3 – SCHEMATIC TUBING DIAGRAM
202EAY797
(Ref. Drawing)
the message “REMOTE HALT” 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 pro-
grammed for “IMMEDIATE”, the compressor will im-
mediately unload, and will run only until the reservoir is
blown down. Then the motors stop, and the unit will be
in the “REMOTE HALT” mode as indicated above.
If the compressor was running in any mode when the
contact was opened, and the remote response is pro-
grammed for “TIMED UNLOAD”, the compressor will
immediately unload and blowdown. It will then continue
to run unloaded for whatever period has been pro-
grammed for “AUTO TIME” (or will complete the re-
maining auto time if already blown down). The control-
ler displays “REMOTE UNLOAD” during this period.
After completion, the motors will stop, and the unit will
be in the “REMOTE HALT” mode as indicated above.
When the remote is turned back on, the unit will start
immediately in the CONSTANT or LOW DEMAND
modes. Loading in these modes, or starting in AUTO
or SEQUENCE modes will occur when the pressure
drops below the set pressure.
The remote is not capable of restarting following a
SHUTDOWN. The unit must be serviced and reset lo-
cally.
Alarm Relay – The ES+ controller is provided with an
alarm relay which may be connected to a remote
mounted indicator light, horn, or into a PLC input of a
plantwide control system. The contact is commercial
rated 2 amps at 120 volts. The relay is turned on when-
ever there is a SHUTDOWN condition requiring service
at the compressor, and remains off during normal op-
eration, stopping, or power off conditions. The external
connections from the controller are from an isolated
form C (single–pole, double–throw) contact. This al-
lows control of either a “compressor okay” or a “com-
pressor shutdown” remote indicator.
To use this relay, connect the supply wire for the remote
circuit to terminal 21 (relay common) on the terminal
strip. Connect a wire to the indicator from either termi-
nal 19 (normally open) or from terminal 20 (normally
closed). Connect the other side of the indicator to its
neutral.
Serial Communications – The RS–232 port is avail-
able for serial communications of compressor data to
external monitoring systems at any time. If units are
NOT connected in sequence, the RS–485 port may be
used for multi–drop communications of compressor
Summary of Contents for ELECTRA-SAVER EAYQ E
Page 15: ...13 10 613 SP Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077 ...
Page 16: ...13 10 613 SP Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077 ...
Page 31: ...13 10 613 SP Page 22 FIGURE 4 2 FLOW CHART FOR SET UP PROGRAMMING ...
Page 48: ...13 10 613 SP Page 39 FIGURE 4 13 WIRING DIAGRAM 202EAY546 Ref Drawing ...
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