SATEC EM920 Operation Manual - Manual (Page 88)

Chapter 5 Configuring the EM920
General Meter Setup
88 EM920 Power Quality and Revenue Meter
Configuring Relay Outputs
The EM920 has one embedded relay output (RO1) and can
provide one additional expansion module with a total of 6
relay outputs (RO2 through RO7). I/O numbers are
automatically assigned to outputs.
To configure the relay outputs in your meter, select General
Setup from the Meter Setup menu, and then click on the
Relay Outputs tab. Relays that are not present in your meter
are not shown.
The available relay options are described in the table below.
Parameter Options Default Description
Operation
mode UNLATHCED
LATCHED
PULSE
KYZ UNLATCHED Unlatched mode: the relay goes to its active
state when the control setpoint is in active
(operated) state, and returns to its non-active
state when the setpoint is released.
Latched mode: the relay goes to its active state
when the control setpoint goes to active state
and remains in the active state until it is
returned to its non-active state by a local or
remote command.
Pulse mode (normal pulses): the relay goes to
its active state for the specified time, goes to
non-active state for the specified time and
remains in the non-active state.
KYZ mode (transition pulses): the relay output
state is changed upon each command and
remains in this state until the next command.