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63230-300-212 Chapter 5—Input/Output Capabilities
April 2001 Mechanical Relay Outputs
77
© 2001 Schneider Electric All Rights Reserved
The optional Input/Output Card IOC44 provides three Form-C, 10 A
mechanical relays that can be used to open or close circuit breakers,
annunciate alarms, and more.
The mechanical output relays of the circuit monitor can be configured to
operate in one of 11 operating modes:
• Normal
• Latched (electrically held)
• Timed
• End of power demand interval
• Absolute kWh pulse
• Absolute kVARh pulse
• kVAh pulse
• kWh in pulse
• kVARh in pulse
• kWh out pulse
• kVARh out pulse
See the previous section “Relay Output Operating Modes” on page 75 for a
description of the modes.
The last seven modes in the list above are for pulse initiator applications. All
Series 4000 Circuit Monitors are equipped with one solid-state
KYZ pulse
output rated at 96 mA and an additional
KYZ pulse output is available on the
IOC44 card. The solid-state KYZ output provides the long life—billions of
operations—required for pulse initiator applications. The mechanical relay
outputs have limited lives: 10 million operations under no load; 100,000
under load. For maximum life, use the solid-state
KYZ pulse output for pulse
initiation, except when a rating higher than 96 mA is required. See“Solid-
State KYZ Pulse Output” on page 78 in this chapter for a description of the
solid-state
KYZ pulse output.
To set up a mechanical relay output, from the Main Menu, select Setup >
I/O.
Select input option IOC44. For detailed instructions, see “Setting Up I/Os” on
page 23 in Chapter 3—Operation.Thenusing
SMS, you must define the
following values for each mechanical relay output:
• Name—A 16-character label used to identify the digital output.
• Mode—Select one of the operating modes listed above.
• Pulse Weight—You must set the pulse weight, the multiplier of the unit
being measured, if you select any of the pulse modes (last 7 listed above).
• Timer—You must set the timer if you select the timed mode or end of
power demand interval mode (in seconds).
• Control—You must set the relay to be controlled either remotely or
internally (from the circuit monitor) if you select the normal, latched, or
timed mode.
For instructions on setting up digital
I/OsinSMS,seetheSMS online help on
device set up of the circuit monitor.
NOTE: The IOC44 can be set up using the display or SMS. The IOX must be
identified using the display, then set up using the display or SMS.
MECHANICAL RELAY OUTPUTS