System information

2.2-20
For more information visit: www.eaton.com CA08104001E
February 2009
Power Management Systems & Products
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Sheet 02
Network Connectivity
Addressable Relay II
028
Addressable Relay II
Addressable Relay II
General Description
Eaton’s Cutler-Hammer Addressable
Relay II is designed for use where
information or control of non-commu-
nicating devices is required remotely.
The relays communicate INCOM
Frequency Shift Key (FSK) on the
Power Management Software system.
Devices are assigned a 3-digit address
to uniquely identify them on the daisy-
chained twisted shielded pair network.
The Addressable Relay II is a Form C
relay with output contact ratings as
shown in the specifications table. The
Addressable Relay II may be powered by
48 to 120 Vac or 48 to 125 Vdc through
terminals 11 and 12 of the terminal
block. dc polarity is not significant. The
operating temperature range of the
Addressable Relay II is 0°C to 70°C.
Each Addressable Relay II includes
two status indicating circuits (IN1 and
IN2) which can be used to transmit the
contact status of devices external to
the Addressable Relay II. A typical
installation using these report-back
inputs to the Power Management
Software system is shown in the wiring
example. Terminals 4 and 5 connect to
the status input 1 circuit, and terminals
6 and 7 connect to the status input 2
circuit. These status indicating circuits
operate with input voltages of 48 to
120 Vac or 48 to 125 Vdc circuits.
The Addressable Relay II includes a
feature called the “communications
watchdog.” The communications
watchdog monitors communications
between the Addressable Relay II and
the computer control station. If com-
munications are lost, the communica-
tions watchdog will reset the relay
to the de-energized (OFF) state.
The Addressable Relay II must be
updated every 10 seconds when the
communications watchdog is enabled
or else communications are assumed
to be lost. The communications watch-
dog is enabled when DIP switch 3 is
set to the ON position. When the com-
munications watchdog is not enabled,
the relay will remain in the state set by
the last command issued. See Figure
2.2-12 for DIP switch configuration.
Applications
■ Enables remote control of non-
communication capable devices
on the Power Management
Software system.
■ Monitors two digital status inputs
on the Power Management
Software system.
Monitored Parameters
■ Output relay energized/de-energized
■ Input relay 1 status
■ Input relay 2 status
■ Breaker status open/closed
■ Protective relay status normal/tripped
Communications
■ Built-in INCOM communications for
monitoring in a Power Management
Software system.
Physical Characteristics
■ Height: 3 inches (76.2 mm)
■ Width: 1.75 inches (44.5 mm)
■ Depth: 4 inches (101.6 mm)
Figure 2.2-12. DIP Switch Functions
Figure 2.2-13. Typical Addressable Relay II Wiring Diagram
Note: The Power Xpert Gateway 400/600 does not support the Addressable Relay II.
O123 N
OO
O
OFF ON
Baud Rate 9600 1200
Relay Pulse Disabled Enabled
Communications Watchdog Disabled Enabled
Breaker
Status
51
Trip
INCOM
Network
6
8
9
11
Input 1
Input 2
Power
INCOM
Communications
Addressable Relay
FL
T1
OL
M1
L1
T2
OL
M2
L2
T3
OL
M3
L3
Power Bus
2
Communication and
Controlled Output Relay
12
7
5
3
1
Off
Auto
OL
OL
MA
M
Hand
Cpt