Determining The Internal Pulse Output Frequency - Omron CP1L Operation Manual

Inverter Positioning
5-3-7

Determining the Internal Pulse Output Frequency

Operand
D First destina-
tion word for
present value
Destination
word for
inverter posi-
tioning status
(P = #0020 or
#0021)
Use the following formula to calculate the internal pulse frequency (Hz) to out-
put from the pulse output instruction (e.g., PLS2) based on the power supply
frequency (Hz) to be output from the inverter to the motor.
Encoder resolution
(pulses/revolution)
Frequency of
internal pulse
output (Hz)
Note (1) Calculate the power supply frequency for one revolution per second from
the motor specifications. For example, with a 1,800-r/min (60-Hz) motor
(30 r/s), the power supply frequency for one revolution per second would
be calculated as follows: 60 [Hz] ÷ 30 [r/s] = 2 [Hz].
D Lower 4 When a present value is read, the following
digits data is stored in D and D+1 as an 8-digit hexa-
decimal value.
D+1 Upper 4
P = #0020/#0021: The actual movement from
digits
the internal pulse origin.
P = #0030/#0031: The present value of the
error counter.
D Bit 0 Operation Command Flag
ON: Operation command in progress
OFF: Stopped
Bit 1 Forward Command Flag
ON: Forward command in progress
OFF: Reverse command in progress or
stopped
Bit 2 Reverse Command Flag
ON: Reverse command in progress
OFF: Forward command in progress or
stopped
Bit 3 In-position Flag
ON: In position
OFF: Not in position
Bit 4 Error Counter Error Flag
ON: Error occurred in error counter
OFF: No error
Bit 5 Internal Pulse Output Flag
ON: Pulses being output
OFF: Pulse output stopped
Bit 6 Internal Pulse Acceleration/Deceleration Flag
ON: Acceleration/deceleration in progress for
internal pulse output (i.e., frequency being
changed)
OFF: Constant frequency for internal pulse out-
put
Bit 7 Error Counter Alarm Flag
ON: Alarm occurred for error counter
OFF: No alarm
Bit 15 Error Counter Sign Flag
ON: Positive
OFF: Negative
High-speed
counter multiplier
Power supply frequency to motor
for one revolution per second (See note 1.)
Description
Gear ratio between motor
shaft and encoder shaft
(See note 2.)
Section 5-3
Power supply
frequency to
motor (Hz)
295