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142
Affinity User Guide
www.controltechniques.com Issue Number: 5
Parameter ranges and variable maximums:
The two values provided define the minimum and maximum values for the given parameter. In some cases the parameter range is variable and
dependant on either:
•
other parameters
•
the drive rating
•
drive mode
•
or a combination of these
The values given in Table 11-4 are the variable maximums used in the drive.
Table 11-4 Definition of parameter ranges & variable maximums
Maximum
Definition
SPEED_FREQ_MAX
[Open-loop 3000.0Hz,
RFC 40000.0rpm]
Maximum speed (RFC mode) reference or frequency (open-loop mode) reference
If Pr
1.08
= 0: SPEED_FREQ_MAX = Pr
1.06
If Pr
1.08
= 1: SPEED_FREQ_MAX is Pr
1.06
or – Pr
1.07
whichever is the largest
(If the second motor map is selected Pr
21.01
is used instead of Pr
1.06
and Pr
21.02
instead of Pr
1.07
)
SPEED_LIMIT_MAX
[40000.0rpm]
Maximum applied to speed reference limits
In RFC mode SPEED_LIMIT_MAX = 40,000rpm.
SPEED_MAX
[40000.0rpm]
Maximum speed
This maximum is used for some speed related parameters in menu 3. To allow headroom for overshoot etc. the
maximum speed is twice the maximum speed reference.
SPEED_MAX = 2 x SPEED_FREQ_MAX
RATED_CURRENT_MAX
[9999.99A]
Maximum motor rated current
RATED_CURRENT_MAX = 1.36 x K
C
.
The motor rated current can be increased above K
C
up to a level not exceeding 1.36 x K
C
). (Maximum motor
rated current is the maximum normal duty current rating.)
The actual level varies from one drive size to another, refer to Table 11-5.
DRIVE_CURRENT_MAX
[9999.99A]
Maximum drive current
The maximum drive current is the current at the over current trip level and is given by:
DRIVE_CURRENT_MAX = K
C
/ 0.45
AC_VOLTAGE_SET_MAX
[690V]
Maximum output voltage set-point
Defines the maximum motor voltage that can be selected.
200V drives: 240V, 400V drives: 480V
575V drives: 575V, 690V drives: 690V
AC_VOLTAGE_MAX
[930V]
Maximum AC output voltage
This maximum has been chosen to allow for maximum AC voltage that can be produced by the drive including
quasi-square wave operation as follows:
AC_VOLTAGE_MAX = 0.78 x DC_VOLTAGE_MAX
200V drives: 325V, 400V drives: 650V, 575V drives: 780V, 690V drives: 930V
DC_VOLTAGE_SET_MAX
[1150V]
Maximum DC voltage set-point
200V rating drive: 0 to 400V, 400V rating drive: 0 to 800V
575V rating drive: 0 to 955V, 690V rating drive: 0 to 1150V
DC_VOLTAGE_MAX
[1190V]
Maximum DC bus voltage
The maximum measurable DC bus voltage.
200V drives: 415V, 400V drives: 830V, 575V drives: 990V, 690V drives: 1190V
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