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6
ASCII Serial Port Operation
6.8.15
Energy Metering: METER E
When the relay is equipped with optional voltage
inputs, the METER E command displays the
measured kilowatt hours, kilovar hours, and
kilovolt-amp hours since the last reset.
6.8.16
Maximum/Minimum
Metering: METER M
The METER M command displays the maximum
and minimum values of assorted current, voltage,
power, and temperature quantities. The relay
begins updating the maximum and minimum
quantities 30 cycles after the motor starts.
Voltage values are only updated if the
phase-to-phase voltage is greater than
13 V secondary. Residual voltage, if
wye-potentials are connected, is only updated if
the voltage is greater than 3 V secondary.
6.8.17
Thermal & RTD Metering:
METER T
The METER T command displays the
temperatures of any connected RTDs. This
command also shows the motor current in % of
Full Load Amps, the present thermal model %
Thermal Capacity, and the RTD % Thermal
Capacity if ambient and winding temperatures
are monitored and a winding RTD trip
temperature is set. If the motor is in overload, this
command response shows the calculated time to
a thermal trip. If the motor is not in overload, the
time shown is 9999 seconds. The number of
starts this hour and the minutes since the last
start are also shown.
6.8.18
METER RD
Reset the accumulated demand values using the
MET RD command.
6.8.19
METER RE
Reset the measured energy values using the
MET RE command.
92
(Level 1 or 2)
(Level 1 or 2)
6.8.20
METER RM
Reset the maximum/minimum meter values using
the MET RM command.
6.8.21
METER RP
Reset the peak demand values using the MET
RP command.
6.8.22
MOTOR
The MOTOR command displays the motor
operating statistics that include the following:
•
Total motor running hours, stopped hours,
and percent running time
•
Total megawatt hours (if optional voltages are
included)
•
Total number of motor starts
•
Average and peak starting times, starting
current magnitudes, thermal capacities, and
other average and peak operating values
•
Learned motor cooling time (if RTDs are
included) and learned starting thermal
capacity
•
Trip and alarm counters, listed by type
Section 8.4, page 114 includes additional details
on the motor operating statistics report.
6.8.23
MOTOR R
Reset the motor operating statistics using the
MOTOR R command. The relay resets all the
data accumulators except the learned motor
parameters, which you reset using the RLP
command.
SIMPRO-100
(Level 1 or 2)
(Level 1 or 2)
(Level 1 or 2)
(Level 2)
PRIM-2400C
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