GE SPM Series, Instruction Manual

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9-
4
SPM Synchronous Motor Protection & Control GE Power Management
9.2 MEMORY MAPPING 9 MODBUS COMMUNICATIONS
9
DIGITAL
INPUTS 024C MX Status Switchstate N/A
024D NX Status Switchstate N/A
024E Reserved
↓ ↓ ↓ ↓ ↓ ↓ ↓
0254 Reserved
STATISTICS
(can be written
as holding
registers) 0255 Motor Running Hours U16 N/A
0256 Incomplete Sequence Trip Counter U16 N/A
0257 Field Loss Trip Counter U16 N/A
0258 Pull Out Trip Counter U16 N/A
0259 Resynchronization Trip Counter U16 N/A
025A Missing External PF Voltage Reference U16 N/A
025B Check Exciter Trip Counter U16 N/A
025C Power Factor Trip Counter U16 N/A
025D Squirrel Cage Trip Counter U16 N/A
025E Field Overtemperature Trip Counter U16 N/A
025F Reserved
↓ ↓ ↓ ↓ ↓ ↓ ↓
0FFF Reserved
Setpoints (Holding registers at addresses 1000 to 2FFF)
SYSTEM
CONFIGURATION 1000 ACCESS PASSWORD
1
0 to 9999 1 - U16 0000
1001 MOTOR TYPE 0 or 1 - - Motortype 0
1002 LINE FREQUENCY 0 or 1 - Hz Linefreq 0
1003 POWER FACTOR REFERENCE 0 or 1 - - PFreg 1
1004 RTU ADDRESS 1 to 254 1 - U16 1
1005 BAUD RATE 0 to 9 1 baud Baudrate 6
1006 RS485 PARITY 0 to 2 1 Parity 0
1007 RS485 MIN. TURNAROUND TIME 0 1000 ms U16 5
1008 STATISTICS MODE 0 or 1 1 - Startmode 1
1009 NEW PASSWORD 0 to 9999 1 - U16 4985
1010 Reserved
↓ ↓ ↓ ↓ ↓ ↓ ↓
104F Reserved
Table 9–2: MODBUS MEMORY MAP (Sheet 3 of 5)
GROUP ADDR
(hex)
DESCRIPTION RANGE STEP
VALUE
UNITS FORMAT
CODE
FACTORY
DEFAULT
* Range for collector-ring motors.
** Range for brushless motors.
1. The access password must be written correctly before any setpoints can be written via Modbus. The password is initially the same as the default password,
but the two passwords are stored separately, so the keyboard can not be used to change the communications password and vice-versa.
2. The allowable range of FLA is as follows: the minimum full load amps value is 2/5 times the CT ratio; the maximum is equal to the CT ratio.
3. The locked rotor current is range dependent on the FLA setpoint: the minimum is twice the full load amps and the maximum value is 12 times the FLA.
4. REGULATOR OUTPUT must be greater than or equal to FLOOR VOLTS, likewise FLOOR VOLTS must be less than or equal to REGULATOR OUTPUT.