Emerson E300 Series Design Manual page 424

Safety Product Mechanical
information information installation
O14 Low Under Voltage Threshold
Mode Open-Loop, RFC-A, RFC-S
Minimum -VM_LOW_UNDER_VOLTS
Default See exceptions below
Type 16 Bit User Save
Display Format Standard
Coding RW, VM, RA
Voltage
200V
400V
575V
690V
See Standard Under Voltage Threshold (O11).
O15 Under Voltage Contactor Close Output
Mode Open-Loop, RFC-A, RFC-S
Minimum 0
Default
Type 1 Bit Volatile
Display Format Standard
Coding RO, ND, NC, PT
See Standard Under Voltage Threshold (O11).
O16 Under Voltage System Contactor Closed
Mode Open-Loop, RFC-A, RFC-S
Minimum 0
Default 0
Type 1 Bit Volatile
Display Format Standard
Coding RW
See Standard Under Voltage Threshold (O11).
O17 Slow Rectifier Charge Rate Enable
Mode Open-Loop, RFC-A, RFC-S
Minimum 0
Default 0
Type 1 Bit User Save
Display Format Standard
Coding RW
For frame size 07 drives and larger, which use a d.c. link charge system based on a half controlled thyristor input bridge, the rate at which the d.c. bus
is charged can be reduced by setting Slow Rectifier Charge Rate Enable (O17) to one. This will reduce the charging current which may be required if
significant additional capacitance is added to the d.c. link to prevent rupturing of input fuses.
424
Electrical Getting
User Menu A Commissioning
installation started
Default Value
175
330
435
435
Advanced
Diagnostics Optimization CT MODBUS RTU Technical Data
Parameters
Maximum VM_LOW_UNDER_VOLTS
Units V
Update Rate Background read
Decimal Places 0
Maximum
1
Units
Update Rate 4 ms write
Decimal Places 0
Maximum
1
Units
Update Rate 4 ms read
Decimal Places 0
Maximum
1
Units
Update Rate Background read
Decimal Places 0
E300 Design Guide
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