Gardner Denver AUTO SENTRY RS2000, Руководство по эксплуатации и обслуживанию

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Local/Master - Remote control enabling of the compressor requires only a simple two-wire control, with
an isolated contact suitable for 120 volts, 1 amp. This may be a switch, a relay contact, or a PLC output.
To connect, simply run the two wires to the control enclosure, and connect the two wires to terminals 6
and 9.
The air compressor will operate normally in automatic mode whenever this contact is open (turned off).
All operating functions will be based on its local, internal pressure sensors.
Whenever the contact is closed (turned on), the operation of the compressor is governed by the “load-
unload” input described below. The compressor’s internal controls will continue to be used for protective
functions and service information. While in the remote mode of operation, all normal loading and
unloading is controlled by the Load/Unload input, rather than internal controls. The display will indicate
the operating mode as “REM” while in remote mode.
This input may be used for a remote disable, by simply leaving the load/unload input off. The compressor
will run normally whenever Local/Remote is on, and will stop whenever Local/Remote is off.
Load/Unload - Remote loading and unloading of the compressor requires only a simple two-wire control,
with an isolated contact suitable for 120 volts, 1 amp. This may be a switch, a relay contact, or a PLC
output. To connect, simply run the two wires to the control enclosure, and connect the two wires to
terminal 5 and terminal 9. This input is considered only when enabled by the Local/Remote input.
The compressor controls will load the compressor when this contact is closed (turned on). This includes
and necessary steps to start the package. It will continue to deliver its full capacity, unless protective
functions take effect. 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 remote response is programmed for "IMMEDIATE", the compressor will immediately unload, and
will run only until the reservoir is blown down. Then the motor stops, and the controller displays
"REMOTE HALT" until once again commanded to load.
If 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". The controller 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.
If the Load/Unload contact closes while any timed periods are in effect, the controls will immediately
proceed to load up the compressor. If the Local/Remote contact opens during any of this operation, the
controls simply automatically assume controls as necessary, based on the local sensors.
Compressor Available Relay - The controller is provided with a relay which may be connected to a
remote mounted indicator light, 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 whenever the controls are in AUTO or REM
mode, and the compressor is available to the system. The relay is turned off if the compressor is
manually stopped, if there is a protective shutdown, or if power is removed. The external connections
from the controller are from an isolated form C (single-pole, double-throw) contact. This allows control of
either a "compressor available" or a "compressor unavailable" 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 terminal 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 available for serial communications of compressor data to
external monitoring systems at any time. The RS-485 port may be used for multi-drop communications of
compressor data to external monitoring systems at any time. Data available include all pressures and
temperatures, and a report of internal service data. This is accessible with a PC or PLC with an
appropriate communications port. For protocol information, request drawing 301EFD1255.