P0681 - Motor Speed In 13 Bits - WEG CFW-11 Communications Manual

Bits
Bits 0 to 4
Bit 5
Second Ramp
Bit 6
In configuration mode
Bit 7
Alarm condition
Bit 8
Ramp Enabled (RUN)
Bit 9
General Enabling active
Bit 10
Speed Direction
Bit 11
JOG
Bit 12
LOC/REM
Bit 13
Undervoltage
Bit 14
Manual/ Automatic
Bit 15
Fault condition
P0681 – Motor Speed in 13 bits
Range: -32768 ... 32767
Proprieties: RO
Access groups via HMI:
01 PARAMETER GROUPS.
∟ 49 Communication
∟ 111 Status/Commands.
Description:
It allows monitoring the motor speed. This word uses 13 bit resolution with sign to represent the motor synchronous
speed:
P0681 = 0000h (0 decimal)
P0681 = 2000h (8192 decimal) → motor speed = synchronous speed
Intermediate or higher speed values in rpm can be obtained by using this scale. E.g. for a 4 pole 1800 rpm
synchronous speed motor, if the value read is 2048 (0800h), then, to obtain the speed in rpm one must calculate:
Table 3.2 - P0680 bit functions
Reserved
0: The inverter is configured to use as acceleration and deceleration ramp for the motor, the
first ramp, programmed at the parameters P0100 and P0101.
1: The inverter is configured to use as acceleration and deceleration ramp for the motor, the
second ramp, programmed at the parameters P0102 and P0103.
0: Inverter operating normally.
1: Inverter in configuration mode. Indicates a special condition when the inverter cannot be
enabled:
Executing the self tuning routine.
Executing guided start-up routine.
Executing the HMI copy function.
Executing the flash memory card guided routine.
There is a parameter setting incompatibility.
Without power supply at the inverter power section.
Note: It is possible to obtain the exact description of the special operation mode at
parameter P0692.
0: The inverter is not in alarm condition.
1: The inverter is in alarm condition.
Note: The alarm number can be read by means of the parameter P0048 – Current Alarm.
0: The inverter is driving the motor at the set point speed, or executing either the acceleration
or the deceleration ramp.
1: The motor is stopped.
0: General Enabling is not active.
1: General enabling is active and the inverter is ready to run the motor.
0: The motor is rotating counterclockwise.
1: The motor is rotating clockwise.
0: JOG function inactive.
1: JOG function active.
0: Inverter in LOCAL situation.
1: Inverter in REMOTE situation.
0: No Undervoltage.
1: With Undervoltage.
0: PID in manual mode.
1: PID in Automatic mode.
0: The inverter is not in a fault condition.
1: Any fault has been registered by the inverter.
Note: The fault number can be read by means of the parameter P0049 – Current Fault.
.
→ motor speed = 0 rpm
8192 – 1800 rpm
2048 – value read in P0681
Values
Default:
Speed in rpm = 1800 × 2048
8192
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