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14 Hardware description
Isolation areas
￭
The following figure describes the different isolation areas of the module.
1
1
Connection to the drive
2
TTL encoder emulation output
3
Resolver input
4
TTL encoder input
5
Digital latches
6
Fixing screw
7
Chassis
The shields of sockets X51 and X52 and plug X53 are connected to chassis. The fixing
screw connects the chassis to ground.
Compatibility
Resolvers
￭
The FEN-21 is compatible with resolvers, which are excited by sinusoidal voltage (to
the rotor winding), and which generate sine and cosine signals proportional to the
rotor angle (to stator windings). Amplitude and frequency of the excitation signal can
be adjusted in range 4...12 V
be such that sine and cosine signals remains in range 2...7 V
TTL Encoders
￭
The FEN-21 is compatible with TTL incremental encoders with 1...65535 pulses/rev
and it supports reference mark.
A
B
C
X54
5
, 1...20 kHz. Transformation ratio of the resolver must
rms
X53
X52
X51
6
7
.
rms
2
3
4
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