Motor Components
3.2 Encoders
1PH7/3-119
Siemens AG, 2004. All rights reserved
Induction Motors, 1PH7 (APH7S) – 05.04 Edition
3.2 Encoders
Incremental encoder 1 Vpp
Table 3-2 Features and technical data
Version Optical encoder system
Application Tachometer for speed actual value sensing
Indirect measuring system for the position
control loop
Coupling At the NDE, integrated in the motor
Output signals (refer to Fig. 3-2) Incremental track, sinusoidal
Reference signal
Connecting Connector
Max. possible connecting cable length 50 m
Operating voltage + 5 V 5 %
Pulse number 2048
Output signals 1 Vpp
Accuracy 40’’
180° el. 90° el.
45° el.
360° el. =
360° mech.
360° el. = 360° mech.
U [V]
ϕ
ϕ
ϕ
ϕ
ϕ
ϕ
2048
0
0
0
0
0
0
U [V]
A
B
R
C
D
R
Fig. 3-2 Signal sequence and assignment for a positive direction of rotation
(clockwise direction of rotation when viewing the drive end)
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