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AUTOMATIC TRANSFER SWITCH
LEHE4651-04
6
CTS SERIES ACCESSORY DEFINITIONS (continued)
LonWorks
LonWorks Communication Module
M1
Single Phase Amp Meter (Analog)
M2
Three Phase Amp Meter (Analog)
M90
EPM2000 True RMS Digital Meter with display (Amps, Volts,
Power, Energy, Power Factor and Frequency). 3 Line LED
Display. 50/60 Hz Universal Operation. 1 or 3 phase. Standard
Modbus RTU RS485 communications capability.
M90A
Includes Modbus communication card and factory wiring
between EPM2000 and Modbus communication card.
M90B
Includes Modbus communication card, Ethernet communication
adapter and factory wiring between EPM2000 and Modbus
communication card.
M91
EPM6000 True RMS Digital Meter with display (Amps, Volts,
Power, Energy, Power Factor and Frequency, THD). Certified
energy and demand metering. Meets ANSI C12.20 and IEC
687 Accuracy Classes. Front IrDA Port Laptop Connection.
Standard Modbus RTU RS485 or DNP 3.0 communications
capability.
M91A
Includes Modbus communication card and factory wiring
between EPM6000 and Modbus communication card.
M91B
Includes Modbus communication card, Ethernet communication
adapter and factory wiring between EPM6000 and Modbus
communication card.
Modbus
Modbus RTU Communication Module
N1
Running Time Indicator – Door mounted
N2
Operation Counter – Door Mounted
P1
Engine Start Timer (adjustable to 6 seconds)
P2
Engine Start Timer – Extended time delay (adjustable to
300 seconds)
Q2
Peak shave/remote load test/area protection – Relay (S.P.D.T.)
(Need to specify voltage – 120 VAC, 24 VAC, 24 VDC – 120V
default standard)
Q3
Inhibit transfer to emergency (Source 2) (load add relay) – Relay
(S.P.D.T.) (Need to specify voltage – 120 VAC, 24 VAC,
24 VDC – 120V default standard)
Q7
Inhibit transfer to normal (Source 1) – Relay (S.P.D.T.) (Need to
specify voltage – 120 VAC, 24 VAC, 24 VDC – 120V default
standard)
R1-1/R1-3
Over Voltage sensing for normal (Source 1) single (R1-1)
or three (R1-3) phase
R15/R15D
Load Shed. Should Source 2 become overloaded, a signal can
be given to switch to the Neutral position.
R16
Phase rotation sensing of Normal (Source 1) and
Emergency (Source 2)
R26/R26D
Interruptible Power Rate Provisions. Allow transfer out
of Source 1 position to Mid position or dead Source 2.
Alarm and Pre-Signal circuit included. (Need to specify
voltage – 120 VAC, 24 VAC, 24 VDC
R50
In Phase monitor between Normal (Source 1) and
Emergency (Source 2) to allow transfer
S5P
Microprocessor activated auto/manual retransfer
selector switch for transferring to Normal (Source 1)
(includes microprocessor activated YN accessory)
S12P
Microprocessor activated auto/manual retransfer
selector switch for transferring to Normal (Source 1)
(includes microprocessor activated YN & YE accessory)
S13P
Microprocessor activated commit/no commit on
transferring to Emergency (Source 2) (with
enable/disable settings)
S14K
Keyed selector switch for retransfer to normal-test-auto
SW1
Auto/Off/Start Engine control selector – Door mounted
(keyed or non-keyed operation available)
SW2
Auto/Off Engine control selector – Door mounted
(keyed or non-keyed operation available)
SW3
Source Priority Selector Switch – Door mounted. Allows
selection of Source 1 or Source 2 to be the Prime
Source. Transfer Switch will transfer to selected Prime
Source if that Source is available. (keyed or non-keyed
operation available)
T
Retransfer to Normal (Source 1) adjustable time delay
T3/W3
Pre-signal contact on transfer to Normal (Source 1) or
Emergency (Source 2) during test
U
Engine stop /cool adjustable cool down timer
UMD
Pre and post transfer output adjustable time range.
Functions in both directions. Includes 2 circuits.
(Additional circuits available).
VI
Voltage imbalance between phases (3 Phase only)
W
Adjustable time delay on transfer to Emergency
(Source 2)
YEN
Bypass transfer timers function (soft key switch in
microprocessor)