Beckhoff EP7402-0057, Руководство пользователя

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Commissioning
EP7402-0057 31 Version: 1.3
n
start
: value for parameter 8020:09 "Start velocity"
i: transmission ratio.
(i = 1 if no gear unit is used)
v: nominal velocity in m/s
(Note: v [m/s] = v [fpm] / 196.85)
d: conveyor roller diameter in m
• If the nominal speed of the roller motor is known, use this formula:
n
start
: value for parameter 8020:09 "Start velocity"
n
N
: nominal speed of the motor in rpm
i: transmission ratio
(i = 1 if no gear unit is used)
8020:13 "Mechanical to electrical ratio"
You can calculate or experimentally determine the value for this parameter.
• If the number of poles of the roller motor is known, use this formula:
p: value for parameter 8020:13 "Mechanical to electrical ratio"
i: transmission ratio.
(i = 1 if no gear unit is used)
• Example:
Number of poles = 8
Transmission ratio = 12:1
→ "Mechanical to electrical ratio" = (8 / 2) x 12 = 48
• If the number of poles of the roller motor is not known:
Determine the "Mechanical to electrical ratio" experimentally [ } 36] .
8020:14 "Rated velocity"
Unit: °/s
Rated speed of the roller motor.
8020:19 “Motor thermal time constant”
Unit: 1/10 s (1/10 of a second)