Nidec E300 Series - Motor and Encoder data; Autotune

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Diagnostics Optimization CT MODBUS RTU Technical Data
166 Installation and System Design Guide
Issue Number: 1
7.3 Motor and Encoder data
In order for the drive to control the motor with a high level of control, both the motor nameplate data and position feedback details RFC-A, RFC-S
need to be set-up in the following drive parameters and an autotune carried out. The default operating mode for the E300 Elevator drive is RFC-S for
gearless Elevator applications using a PM synchronous motor.
Table 7-2 Motor parameters
Table 7-3 Encoder parameters
Should the encoder increment in the wrong direction, Drive Encoder Feedback Reverse (C12) can be used to invert the direction of rotation. If there
is motor acoustic noise during operation following the autotune, refer to section 10.3 Motor acoustic noise on page 296.
7.4 Autotune
Prior to an autotune being carried out, the motor nameplate data must be set-up and for RFC-A, RFC-S operation with a position feedback device the
position feedback parameters must be set-up. There are two possible autotunes available, these being a static autotune and a rotating autotune as
described here.
Both the static and rotating autotunes are available for Open loop or RFC-A, RFC-S operating modes. The static autotune will measure motor
parameters to provide good control, and the rotating autotune will measure motor parameters to provide a higher level of control. Only the rotating
autotune will check the position feedback device connected to the drive. Refer to A26 (Motor Autotune B11) used to select the required autotune,
None (0) Static (1) Rotating (2).
7.4.1 Static Autotune
A26 (Motor Autotune B11). The following describes how an autotune test can be initiated and normal operation resumed following successful
completion of the test:
The static autotune is carried out with the output motor contactors closed as the motor is energized, the motor brake remains fully closed during the
complete autotune test. The control over the output motor contactors during the static autotune must be made manually.
1. The static autotune test cannot be initiated if the drive is tripped Drive OK (L05) = Off (0) or the drive is active Drive Active (L06) = On (1). The
drive can be disabled by removing the drive enable signal from control terminal 31.
2. A static autotune test is initiated by setting A26 (Motor Autotune B11) to Static autotune (1) or Full Stationary (5). Full Stationary is available for
RFC-S mode only.
3. The output motor contactors should be closed, this sequence also applies the drive enable signal on control terminal 31.
4. A drive run signal should be applied.
5. The static autotune will commence.
The motor parameter settings affect the protection for the motor, and should they be set incorrectly, this can result in damage to the motor
and encoder connected to the motor. It is essential that the correct value is entered for the Motor Rated Current with this affecting the
thermal protection of the motor. The default values in the drive should not be relied upon.
CAUTION
Setting the Symmetrical Current Limit (B16) to a low value or zero can result in uncontrolled movement on brake release. Ensure the
Symmetrical Current Limit (B16) is set to a suitable value taking into account both the motor rated current and overload requirement in the
worst case load condition to avoid uncontrolled movement and the risk of damage to the system.
Parameter Mode Detail
Motor Rated Current (B02)
Open loop, RFC-A, RFC-S Motor nameplate data
Motor Rated Voltage (B03)
Motor Rated Power Factor (B04) Open loop Can be derived from rotating autotune
Motor Number Of Poles (B05)
Open loop, RFC-A, RFC-S
Open loop and RFC-A mode select automatic if unknown
Motor Rated Frequency (B06) Motor nameplate data
Motor Rated Speed (B07)
For Open loop, RFC-A control ensure correct slip speed
refer to parameter A16 (Slip Compensation Enable B10)
Symmetrical Current Limit (B16) Maximum operating current limit to protect motor.
Parameter Mode Detail
Drive Encoder Type (C01)
RFC-A, RFC-S
Encoder nameplate
Drive Encoder Auto Configuration Select (C02) Can only be used with encoders with comms
Drive Encoder Rotary Pulses Per Revolution (C03) Encoder nameplate data / auto configuration
Drive Encoder Voltage Select (C04) Encoder nameplate data
WARNING
Setting the encoder power supply voltage too high for the encoder connected to the drive could result in damage to the feedback device. Only
increase the encoder power supply voltage setting for suitable encoders connected to the drive.
CAUTION
NOTE