Generac Power Systems 40-400A, Руководство по эксплуатации и обслуживанию

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Instruction Booklet
Page 12 Effective: September 2011
40-400A (480/600Vac) ATC-300+ 3-Postion
Contactor Based Transfer Switch
36. Emergency Inhibit (new feature)
This feature enables the Emergency inhibit control input to
inhibit transfers to the Emergency Source. See Control
Inputs section for more information.
This input is located on Pins 7 and 8 of Connector J8 and
is enabled when the Emergency Inhibit is enabled. The con-
tact is closed for normal operation. Opening this contact
will activate the Emergency Inhibit input.
If the Emergency Inhibit contact is opened when the load is
connected to the Normal Source, no action will be taken if
the Normal Source is available. If the Normal Source is not
available, an immediate transfer to the neutral position will
occur.
If the Emergency Inhibit contact is opened when the load is
connected to the Emergency Source, the ATC-300+ will
transfer the load to the Normal Source if it is available. If
the Normal Source is not available, an immediate transfer
to the neutral position will occur.
The Emergency Inhibit input is only active when either
Source 1 or Source 2 is preferred. This input is not active
when the Preferred Source selection is set to None.
The Emergency Inhibit input takes priority over the Go To
Emergency input if both inputs are activated at the same
time. In this case, the generator will start but a transfer to
the Emergency Source will be inhibited until the Emergency
Inhibit input is de-activated.
42. Seismic Withstand Capability
Provides transfer switch with seismic capability exceeding
the worst case Zone 4 required per both the Uniform Build-
ing Code and the California Building Code.
48F. RS-485 with Modbus Option
Provides communications for the ATC-300+ via Modbus
through an integrated RS-485 port. Registers are available
to read back status, voltages, frequencies, and historical
data. Registers are also available for transfer switch con-
trol. Setpoints may be read back and/or programmed via a
pass-through command. See the ATC-300+ Modbus Com-
munication Guide pn: 66A7787.
3.5.2 Optional Features
The following is a list of the optional features for the ATC-300+
Controlled ATS. All features or combinations of features may not
be available on specific ATSs
9B. Maintenance Selector Switch (MSS)
Marked “OFF”, “ON”. This feature provides selector
switch disconnection of control to transfer thus allowing
testing of the transfer switch control logic circuitry with-
out initiating load transfer. Positioning the MSS in the
“OFF” position isolates the control circuit, permitting man-
ual operation of the transfer switch or testing of logic cir-
cuitry without load transfer. White indication light is lit ON
and display on ATC-300 controller shows “ATS NOT IN
AUTOMATIC” when the switch is in maintenance mode.
14. Relay Auxiliary Contacts : This feature provides form “C”
relay auxiliary contacts.
14C. Source 1 Present : Provides four (4) normally open and four
(4) normally closed contacts. The relay is energized when
Source 1 is available.
14D. Source 2 Present : Provides four (4) normally open and four
(4) normally closed contacts. The relay is energized when
Source 2 is available.
15. Switch Position Indication Contact
This feature provides a contact that indicates if the power
switching device is in the “Open” or “Closed position.
15G. Source 1 Position Indication Contact
This feature provides 3 Dry Form “C” contacts that indi-
cate the position of the Source 1 power-switching device.
15H. Source 2 Position Indication Contact
This feature provides 3 Dry Form “C” contacts that indi-
cate the position of the Source 2 power-switching device.
18. Metering
This feature includes all required external devices (CTs,
shorting blocks, fuses, etc.) for a fully functional metering
system.
18AN. IQ 250/260 Normal (S1) Only
18AE. IQ 250/260 Emergency (S2) Only
18AL. IQ 250/260 Load
18CN. IQ 110/115 Normal (S1) Only
18CE. IQ 110/115 Emergency (S2) Only
18CL. IQ 110/115 Load
18DN. IQ 130/140/150 Normal (S1) Only
18DE. IQ 130/140/150 Emergency (S2) Only
18DL. IQ 130/140/150 Load
18EN. PXM2250/2260/2270 Normal (S1) Only
18EE. PXM2250/2260/2270 Emergency (S2) Only
18EL. PXM2250/2260/2270 Load
18O. IQ Analyzer Normal (S1) Only
18P. IQ Analyzer Emergency (S2) Only
18Q. IQ Analyzer Normal (S1) & Emergency (S2) Switch Select-
able
18V. IQ Analyzer Load
18R. IQ DP-4000 Normal (S1) Only
18S. IQ DP-4000 Emergency (S2) Only
18T. IQ DP-4000 Normal (S1) & Emergency (S2) Switch Select-
able
18U. IQ DP-4000 Load
18W. Ammeter
A single ammeter is a true RMS sensing device that dis-
plays single phase current only.
The ammeter can be mounted on Source 1, Source 2, or
load. The meter can also be configured for 1, 2, or 3-phase
sensing by supplying one meter per phase for Source 1,
Source 2, or load. Ammeters for both Source 1 and Source
2 can also be grouped together.