ADL300 • Quick installation guide - Specifications and connection 137
Repeat Encoder RE (TTL/HTL line-driver)
Encoder expansion cards have an incremental encoder output with TTL/HTL Line Driver levels (according to the main
encoder supply) to be used to repeat the servomotor feedback device. This function is performed via HW and an
encoder output can be repeated with a programmable divider. The encoder output signals are available on the XER
connector:
20
21
22
23
B- out
B+ out
A- out
A+ out
(*)
XER
(*) Connection of shielding, see gure 7.2.4
Channels ������������������������������� A+ A-, B+ B-, differential line drivers, optoisolated.
Max frequency �������������������������� 200 kHz
Number of impulses ���������������������� 1/1-1/2-1/4-1/8 repeat (default 1/1)
Electrical interface ������������������������ TTL (ref. GND) Ulow ≤ 0.5 V Uhigh ≥ 2.5 V
HTL Ulow ≤ 3.0 V Uhigh ≥ Venc - 3.0 V (only with DE encoder)
Load capacity ��������������������������� TTL 20mA @ 5,5V (Zin 120Ω) for each channel
HTL 50mA max. for each channel .
Power supply ���������������������������� Venc (encoder signals are repeated on the same value of the primary encoder), the supply value
for the repeat is always that set for the primary encoder.
Cable length ���������������������������� max 50m
(1) The internal power supply of the encoder can be selected from the keypad (ENCODER CONFIG menu, parameter Encoder supply (PAR 2102) to balance the
loss of voltage due to the length of the encoder cable and load current, minimum step 0.1 V
Internal power supply of the encoder
Encoder option type Def Min Max
Enc 1 5.2 V 5.2 V 20.0 V
Enc 2 5.2 V 5.2 V 6.0 V
Enc 3 5.2 V 5.2 V 6.0 V
Enc 4 5.2 V 5.2 V 10.0 V
Enc 5 8.0 V 7.0 V 12.0 V
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