Encoder Interface (Exp-Enc-Agy Option Board); Wiring; Setting Of Encoder Power Supply; Encoder Sign Test - gefran SIEIDrive LIFT AGy-L Mode D'emploi

8 - Encoder Interface (EXP-ENC-AGy option board)

AGy -L provides an enhanced encoder interface for closed loop speed control.
Standard two channels quadrature digital encoders with 5V, 8V or 24V power supply can be used. Maximum input frequency
on either channel is 150kHz.

8.1 Wiring

The EXP-ENC-AGy expansion card allows the connection of a digital encoder TTL (+5V) or HTL (+24V).
Default setting= HTL (+24V)
24V Encoder mains supply
8V, 5V Encoder mains supply
Term. Designation
12 A+
13 A-
14 B+
15 B-
35 Vcc
38 GND
(*)

8.2 Setting of encoder power supply

24V HTL encoders can be supplied by using the +24V output, available on the standard regulation board (terminal 9); in
that case terminals 35 and 36 on EXP-ENC-AGy card should be left unconnected.
The two jumpers S1 on the EXP-ENC-AGy board must be OFF (default), meaning that A and B channels are HTL.
TTL encoders, requiring 5V or 8V power supply can be supplied by using terminals 35 and 36 of EXP-ENC-AGy.
The voltage level output on those terminals is determined by the drive parameter: I.505 Enc power supply.
Allowed settings are:
[0] 5.2V
[1] 5.6V
[2] 8.3V
[3] 8.7V
Proper setting is determined according to encoder specifications and cable length. The longer is the cable connecting the
external power supply to the encoder, the higher should be the setting.
Select the two jumpers S1, on the EXP-ENC-AGy board, to ON, meaning that A and B channels are TTL.
Refer to Fig.7.1 for a sample wiring diagram.

8.3 Encoder sign test

Before to use closed loop speed control it is necessary to verify if sign of acquired encoder speed corresponds to reference
speed. For this:
1 - run the drive in open loop mode and set S.400 Control mode = [0] V/f OpenLoop; I.500 Encoder enable = [1]
Enable)
2 - on Display menu select d.001 Rif frequenza and d.301 Freq. encoder parameters and compare the signs .
3 - in case of different signs please invert connection of encoder channels A+ , A- with B+, B-
84
When an HTL encoder is used, on terminals 9 and 10 of R-AGy-2 regulation card
is available the following voltage:
- terminal 9 : +24V OUT
- terminal 10 : 0V24 - GND
This DC supply is available on terminals 35 and 36 of EXP-ENCAGy card :
Function
A channel positive
A channel negative
B channel positive
B channel negative
8V , 5V (*) Vcc Encoder mains supply
GND Encoder mains supply
selectable via software by I.505 parameter, into INTERFACE menu.
AGy -L