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4
Settings Calculation
SIMPRO-100
56
PRIM-2400C
4.4.4
Load-Jam Elements
Table 4.17
Load-Jam Function Settings
When the motor is running, the relay offers
load-jam detection. When the motor load jams,
stalling the motor, the phase current will increase
to near the locked rotor value. When Load Jam
Tripping is enabled, if the phase current exceeds
the Load Jam Trip Pickup setting for longer than
the time delay setting, the relay will trip. Set the
Load Jam Trip Pickup greater than the expected
normal load current but less than rated locked
rotor current. This setting is entered in per unit of
the Full Load Amps (FLA) setting.
4.4.5
Load-Loss Elements
4.4.5.1
Load-Loss Element, No Voltage
Option (Relay Models
SIMPRO-100-R or N-V)
Table 4.18
Load-Loss Element Settings, No Voltage
Option
When the relay is not equipped with optional
voltage inputs, the load-loss detection function is
dependent on current alone. The relay arms the
load-loss detection logic a settable time after the
motor starts, as defined by the Load Loss
Starting Time Delay setting. Set this delay to
allow pumps or compressors to reach normal
load. Once armed, the function issues an alarm
or trip if phase current drops below the alarm or
trip threshold for the specified time delay.
Set the Load Loss Trip and Alarm thresholds
greater than the expected motor no load current
but less than the minimum current expected
when the motor is operating normally. These
settings are entered in per unit of the Full Load
Amps (FLA) setting.
If you expect the motor to operate at no load
normally, disable this function by setting LLAPU
equal to OFF. The relay automatically hides the
remaining load-loss settings.
4.4.5.2
Load-Loss Element, Voltage
Option Included (Relay Models
SIMPRO-100-R-V or N)
Table 4.19
Load-Loss Element Settings, With Voltage
Option
When the relay is equipped with optional voltage
inputs, the load-loss detection function depends
on the power used by the motor. The relay arms
the load-loss detection logic a settable time after
the motor starts, as defined by the Load Loss
Starting Time Delay setting. Set this delay to
allow pumps or compressors to reach normal
load. Once armed, the function issues an alarm
or trip if three-phase power drops below the
Setting
Prompt
Setting Range
Setting Name =
Factory Default
Load Jam
Trip Pickup
OFF, 0.5 – 6.0 pu FLA
LJTPU = 2.0
Load Jam
Trip Delay
0.00 – 400.00 s
LJTDLY = 1.00
Setting Prompt
Setting Range
Setting Name =
Factory Default
Load Loss Alarm
Threshold
OFF, 0.05 – 1.00 pu
FLA
LLAPU = OFF
Load Loss Trip
Threshold
0.05 – 1.00 pu FLA LLTPU = 0.50
Load Loss Starting
Time Delay
0 – 15000 s
LLSDLY = 0
Load Loss Alarm
Time Delay
0.00 – 400.00 s
LLADLY = 5.00
Load Loss Trip
Time Delay
0.00 – 400.00 s
LLTDLY = 10.00
Setting Prompt
Setting Range
Setting Name =
Factory Default
Load Loss Alarm
Threshold
OFF, 30 – 2000 W
a
LLAPU = OFF
Load Loss Trip
Threshold
30 – 2000 W
a
LLTPU = 0.50
Load Loss Starting
Time Delay
0 – 15000 s
LLSDLY = 0
Load Loss Alarm
Time Delay
0.00 – 400.00 s
LLADLY = 5.00
Load Loss Trip
Time Delay
0.00 – 400.00 s
LLTDLY = 10.00
a
Setting range shown for ITAP = 5 A. Range is 6-400 W when
ITAP = 1 A.
Summary of Contents for SIMPRO-100
Page 1: ...SIMPRO 100 Motor Protection Relay Instruction Manual Document No PRIM 2400C ...
Page 12: ...Contents SIMPRO 100 x PRIM 2400C ...
Page 16: ...Contents SIMPRO 100 xiv PRIM 2400C ...
Page 42: ...3 SIMPRO PC Software SIMPRO 100 40 PRIM 2400C ...
Page 100: ...6 ASCII Serial Port Operation SIMPRO 100 98 PRIM 2400C ...
Page 127: ...SIMPRO 100 Event Analysis 9 PRIM 2400C 125 Figure 9 2 Example SER Report ...
Page 136: ...10 Maintenance Troubleshooting SIMPRO 100 134 PRIM 2400C ...
Page 138: ...A Firmware Versions SIMPRO 100 136 PRIM 2400C ...
Page 206: ...D SIMPRO PC Compatibility Features SIMPRO 100 204 PRIM 2400C ...
Page 214: ...E Motor Thermal Element SIMPRO 100 212 PRIM 2400C ...
Page 230: ...F SIMPRO 100 Relay Settings Sheets SIMPRO 100 228 PRIM 2400C ...
Page 239: ......