User Manual

Rockwell Automation Publication 193-UM002I-EN-P - December 2011 151
Voltage Parameters Chapter 7
Voltage Setup Group
Volt Unbalance
This parameter provides the percent
current unbalance measurement.
%VU = 100 (Vd/Va)
where,
VU: Voltage Unbalance
Vd: Maximum deviation from the average
voltage
Va: Average voltage
Parameter Number 170
Access Rule Get
Data Type USINT
Object Mapping 0Fhex-AA-01
Group Voltage Monitor
Units %
Minimum Value 0
Maximum Value 255
Default Value —
Volt Frequency
This parameter provides the frequency
based on the incoming voltage signal.
Parameter Number 171
Access Rule Get
Data Type USINT
Object Mapping 0Fhex-AB-01
Group Voltage Monitor
Units Hz
Minimum Value 0
Maximum Value 250
Default Value —
V Phase Rot
This parameter provides the rotation of the
three phase voltage system.
Parameter Number 172
Access Rule Get
Data Type USINT
Object Mapping 0Fhex-AC-01
Group Voltage Monitor
Units 0 = No Rotation
1 = ABC
2 = ACB
Minimum Value 0
Maximum Value 2
Default Value —
Volt Mode
This parameter selects the voltage system
that the relay is monitoring.
Open Delta and Delta with PT is only valid
for the 193-EC5ZZ (9…5000 A)
Parameter Number 156
Access Rule Get/Set
Data Type USINT
Object Mapping 0Fhex-AC-01
Group Voltage Setup
Units 0 = Delta
1 = Wye
2 = Open Delta
3 = Delta with PT
Minimum Value 0
Maximum Value 3
Default Value 0
V Trip Enable
This parameter allows the installer to
enable or disable voltage based trip
functions separately.
1 = Trip
0 = No TrIp
Parameter Number 158
Access Rule Get/Set
Data Type UINT
Object Mapping 0Fhex-9E-01
Group Voltage Setup
Units —
Minimum Value 0000000000000000
Maximum Value 0000000000111111
Default Value 0000000000000000