Rockwell Automation 1420 PowerMonitor 500 User Manual

Page 66

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66

Rockwell Automation Publication 1420-UM001D-EN-P - September 2013

Appendix B

Technical Specifications

Data (bidirectional)

Dynamic (reading only)

System and phase variables: see the Modbus register tables

Static (reading and writing only)

All the configuration parameters; see the Modbus register tables

Data format

1 start bit, 8 data bit, no/even/odd parity,1 stop bit

Communication rate

Selectable:9.6, 19.2, 38.4, 115.2 Kbps

Note

With the rotary switch (on the back of the basic unit) in lock position, modification of programming parameters and reset
command by means of serial communication are not allowed. In this case just data reading is allowed

Insulation See

Table 42

Isolation Between Inputs and Outputs (1 minute)

Table 36 - Serial RS-485/RS-232 Communication Specifications (485 option)

Attribute

Value

Table 37 - Energy Meters

Attribute

Value

Meters

Total

4 (9+1 digit)

Partial

4 (9+1 digit)

Pulse output

Connectable to total and/or partial meters

Energy meter recording

Storage of total and partial energy meters. Energy meter storage format (EEPROM)
Min. -9,999,999,999.9 kWh/kVARh
Max. 9,999,999,999.9 kWh/kVARh

Energy meters

Total energy meters

+kWh, +kVARh, -kWh, -kVARh

Partial energy meters

+kWh, +kVARh, -kWh, -kVARh

Table 38 - Display, Status Indicators, and Commands

Attribute

Value

Display refresh time

 100 ms

Display

4 lines, 4-DGT, 1 lines, 10-DGT

Type

LCD, single color backlight

Digit dimensions

4-DGT: h 9.5 mm; 10-DGT: h 6.0 mm

Instantaneous variables read-out

4-DGT

Energy variables read-out

Imported Total/Partial: 9+1DGT or 10DGT;
Exported Total/Partial: 9+1DGT or 10DGT (with ‘-’ sign)

Run hours counter

8+2 DGT (99.999.999 hours and 59 minutes max)

Overload status

EEEE indication when the value being measured is exceeding the ‘Continuous inputs overload’ (max measurement
capacity)

Max and min indication

Max instantaneous variables: 9999; energies: 9 999 999 99.9 or 9 999 999 999.
Min instantaneous variables: 0.000; energies 0.0

Front position status indicators

Virtual alarms

4 red status indicators available in case of virtual alarm (AL1-AL2- AL3-AL4).
Note that the real alarm is just the activation of the proper static or relay output if the proper module is available

Energy consumption

Red status indicator (only kWh)

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