Signaling - Toshiba TOSVERT VF-AS3 Option Instruction Manual

Table 2-2. Internal circuit
(a)
(b)

2.2.3 Signaling

Following type resolver is applicable for this option.
- Excitation frequency: 3 to 12 kHz
- Transformation ratio: 0.5
- Pole number: 2
Recommended resolver is RTD4A4Y2 P1 7 10 0.5 D2SR12 12 (Baumer).
As for the resolver signals, connect S1-S4 and R1, R2 with the same terminal on your resolver.
The signal feedback from the resolver should have the waveform shown in Fig.1 (S2-S4 should have
90degree phase difference from S3-S1) in terms of the motor rotation direction. The resolver installation
direction and signal wiring should be done accordingly.
• Use the resolver with the specification described in this manual.
Improper resolver usage can result in accident and malfunction.
• Forward rotation or reverse rotation is judged from the resolver feedback signals of S2-S4 and S3-S1.
Make sure that the connection correctly. Wrong connection can cause an accident due to unintended
Mandatory
action
rotation of the motor.
R2
R1
S2 – S4
S3 – S1
R2 – R4
0º 90º
Fig.1 - Resolver format signal
CAUTION
Circuit diagram
VCC
50k
S1
S2
S3
S4
50k
VDD
Reference
4.7
oscillator
4.7
Gain
controller
180º 270º
10
VCC
ADC
Controller
360º
E6582171