GE SPM Series, Instruction Manual

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GE Power Management SPM Synchronous Motor Protection & Control 9-
3
9 MODBUS COMMUNICATIONS 9.2 MEMORY MAPPING
9
POWER
FACTOR 022A Instantaneous Power Factor Pwrfactor N/A
022B Filtered Power Factor Pwrfactor N/A
022C Instantaneous Phase Angle U16 N/A
022D Filtered Phase Angle U16 N/A
022E Reserved
↓ ↓ ↓ ↓ ↓ ↓ ↓
0231 Reserved
EXCITER
CURRENT 0232 Instantaneous Exciter Current U16 N/A
0233 Filtered Exciter Current U16 N/A
0234 Reserved
0235 Reserved
0236 Reserved
EXCITER
VOLTAGE 0237 Instantaneous Exciter Voltage U16 N/A
0238 Filtered Exciter Voltage U16 N/A
0239 Reserved
023A Reserved
023B Reserved
FIELD
OHMS 023C Instantaneous Field Ohms U16 N/A
023D Filtered Field Ohms U16 N/A
023E Reserved
023F Reserved
0240 Reserved
INDUCED
FIELD 0241 Field Voltage Frequency 0.00 to 99.99 2decU16 N/A
0242 Percentage Slip 0.0 to 100.0 1decU16 N/A
0243 Reserved
0244 Reserved
0245 Reserved
OUTPUT
RELAYS 0246 TRIP Relay Status Relaystate N/A
0247 FAR Relay Status Relaystate N/A
0248 FCX Relay Status Relaystate N/A
0249 Reserved
024A Reserved
024B Reserved
Table 9–2: MODBUS MEMORY MAP (Sheet 2 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.