Wesley BC-620-4CA - Manual (Page 31)

Curtis 1234/36/38 Manual,
OS
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2 3 J U LY 2 0 0 8 D R A F T
3 — PROGRAMMABLE PARAMETERS: Control Mode Select Parameter
CONTROL MODE SELECT
ALLOWABLE
PARAMETER RANGE DESCRIPTION
Control Mode Select 0–2 This parameter determines which control method will be in effect when
Control_Mode_Select 0–2 programming motor response:
0 =
SPEED MODE EXPRESS
1 =
SPEED MODE
2 =
TORQUE MODE
.
Contact Curtis if you are interested in a custom control method.
Note: Do not change this parameter while the controller is powering
the motor. Any time this parameter is changed a Parameter Change Fault
(fault code 49) is set and must be cleared by cycling power; this protects
the controller and the operator.
Note: Motor Speed Constraints
The maximum motor speed is a programmable parameter in each control mode.
Regardless of which control mode is used, the maximum motor speed the controller
will allow is constrained by the number of motor poles, the number of encoder pulses
per motor revolution, and the maximum speed constraint imposed by the firmware.
Electrical frequency constraint
The maximum electrical frequency the controller will output is 300 Hz.
To determine how fast this constraint will allow your motor to spin, use the
equation
Max Motor RPM = 36000 / Number of Motor Poles
(e.g., a 6-pole motor can run up to 6000 rpm).
Encoder pulses/revolution constraint
The maximum encoder frequency the controller will accept is 10 kHz.
To determine how fast this constraint will allow your motor to spin, use the
equation
Max Motor RPM = 600000 / Encoder Size
(e.g., a motor with a 128-pulse encoder can run up to 4687 rpm).
Firmware max speed constraint
The maximum motor speed the controller will allow is 8000 rpm.
The overall maximum motor speed allowed is the least of these three constraints.
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