62 - PVD3627-August 2011
3.8. Feedback system
3.8.1.
A resolver determines the rotor position.
Resolver
Its signals are processed by the drive in order to control the stator currents, the speed and
the position.
Two resolver types can be associated with the MGV: CB52 or CB102 with a connector
seat.
CB52
CB102
Motor associated
MGV4 / MGV6 / MGV8
MGV9 / MGVA
Maximum speed
50 000 rpm
20 000 rpm
Number of pole
2 poles
2 poles
Feeding voltage at 8 KHz
7 Vrms
7 Vrms
Feeding current at 8 KHz
70mA maximum
70mA maximum
Precision under 7Vrms at 8KHz
+/-6’
+/-10’
Transformation ratio
0.425 mini, 0.55 maxi
0.425 mini, 0.55 maxi
Input DC resistance, supply
transformer (R1-R2)
Mini 24 Ω
Maxi 26 Ω
Mini
: 15.1 Ω
Maxi
: 16.2 Ω
DC stator resistance output sin (S2-
S4) output cos (S1-S3)
Mini 34.5 Ω
Maxi 37.5 Ω
Mini 57.4 Ω
Maxi 63Ω
Insulation resistance
≥ 50MΩ
≥ 50MΩ
Assembly
Direct on shaft end
Direct on shaft end
Operating temperature
-55 – +155 °C
-55 – +155 °C
Resolver connector
PIN
Signal
1
Output voltage S3 (cos-)
2
Output voltage S1 (cos+)
3
4
5
6
7
Output voltage S2 (sin+)
8
Output voltage S4 (sin-)
9
10
Input voltage R1
11
12
Input voltage R2