Page 43
4.5 Motor feedback connection [X2A] and [X2B]
Different feedback systems can be connected to the ARS 2100 SE series servo drives via the
universal encoder interface:
Resolver (interface [X2A])
Encoder (interface [X2B])
Incremental encoders with analogue and digital track signals
SinCos encoder (single-turn/multi-turn) with HIPERFACE
®
Multiturn absolute encoder with EnDat
The encoder type is determined in the Metronix ServoCommander
®
parameterisation software.
The feedback signal is available via the incremental encoder output [X11] for master-slave
applications.
It is possible to evaluate two shaft encoder systems in parallel. Typically, the resolver for the current
control is connected to [X2A], and for example an absolute encoder is connected to [X2B] as a
feedback system for the positioning control.
4.5.1 Resolver connection [X2A]
The 9-pin D-SUB connection [X2A] is used to evaluate standard resolvers. Single- and multi-pole
resolvers are supported. The user can state the number of pairs of poles of the servo motor in
the "Motor Data" menu of the Metronix ServoCommander
®
parameterisation program so that the
ARS 2100 SE determines the speed correctly. The number of pairs of poles of the motor (P
0Motor
) is
always an integer multiple of the number of pairs of poles of the resolver (P
0Resolver
). Wrong
combinations such as, for example, P
0Resolver
= 2 and P
0Motor
= 5 lead to an error message during motor
identification.
The resolver offset angle, which is determined automatically during the identification, is readable and
writeable for service purposes.
Table 19:
Technical data: Resolver [X2A]
Parameter
Values
Transformation ratio
0,5
Carrier frequency
5 to 10 kHz
Excitation voltage
7 V
RMS
, short circuit-proof
Impedance excitation (at 10kHz)
(20 + j20)
Product Manual „Servo drives ARS 2100 SE“
Version 5.0
