Connection and initialization

UM1040

8/19

Doc ID 18362 Rev 3

If it is activated with other types of transducers, an autotuning alarm indicates that the

transducer is wrong. A fix current vector is positioned on the “U” phase. The offset

angle between the transducer and the motor (Resolver phase) is calculated.

●

Calculate and Store EnDat Phase

Refers to motors installing EnDat resolvers.

If it is activated with other types of transducers, an autotuning alarm indicates that the

transducer is wrong.

A fixed current vector is positioned on the “U” phase. The offset angle between the

transducer and the motor (EnDat phase) is calculated and then saved in the EnDat

retentive memory. The SPIMD20 transducer is then automatically initialized.

●

Calculate SinCos Phase

Refers to motors installing SinCos resolvers read through the resolver input of the

SPIMD20.

If it is activated with other types of transducers, an autotuning alarm indicates that the

transducer is wrong.

A fixed current vector is positioned on the “U” phase. The offset angle between the

transducer and the motor (Resolver phase) is calculated.

●

Check Motor Wiring

Checks that the motor phases sequence and the transducer wiring are correct, so that

the speed loop is correctly closed.

It checks that the ratio between the number of the motor poles and those of the

transducer is correct.

A driving sequence of the current vector is executed. The vector is firstly positioned on

the “U” phase, then on the “V” phase, and in the end, on the “W” phase.

Note that he correct phase sequence must ensure that the motor moves clockwise

(view from the shaft side) when the current tests are activated with an adequate

reference and the current vector is positioned in sequence on the U, V, and W phases.

If not, the motor phases wiring must be reversed.

With this sequence of the current vector the position read by the position transducer

must increase in a positive direction by the correct number of bits, depending on the

motor/transducer poles ratio.

If this test results in a “Delta Angle” alarm, it means that the torque value is too small to

execute the test.

If the polar sequence and the transducer direction are not correct, it results in a “Motor

Wiring” alarm.

With motors installing resolvers the transducer direction is inverted, for instance,

reversing the signals cos+ and cos-.

The software has been designed following the regulation of the BRX resolvers with the

following wiring colors:

–

Primary Exc+ (red/white) Exc- (yellow/white or black/white)

–

Secondary Sin+ (yellow) Sin- (blue)

–

Secondary Cos+ (red) Cos- (black)

If a motor with rotary EnDat is installed, the parameter “EnDat Rotation Sign” in the

menu Configuration > Transducer > EnDat (Rotary Encoders) must be reversed (it can

be modified only in “Pre Operational” mode, remember to save it to the Flash memory

then return to “operational” mode).