ABB HTL Encoder Interface FEN-31

FEN-31 HTLEncoderInterface

FEN-31 is an interface between the control board and an HTL encoder. It supports

various types of HTL encoders. A PTC, Pt1000 or KTY temperature sensor can be

attached to one of the connections of the FEN-31 interface.

FEN-31 offers an RS-422-standard-compliant TTL encoder emulation output and two

digital inputs. It also includes cable fault diagnostics for some HTL encoder types.

See the drive Firmware manual for details.

Compatibility

FEN-31iscompatiblewiththefollowingencoders:

• Differentialpush-pullHTLencoders

• Single-endedpush-pullHTLencoders

• OpencollectorHTLencoders

• OpenemitterHTLencoders

￭Compatibledrivetypes

ToinvestigateifFEN-31iscompatiblewithaspecificdrivetype,refertotheordering

informationofthedriveorthedrivehardwaremanual.

Note:Beforemountingtheoptionmodule,setthesupplyvoltagejumpersasdescribed above.

The option module is to beinserted into the option slot of the drive. See the drive

hardware manual for more information.

The moduleis held in place with plastic retaining clips, a locking tab and one screw.

The screw also provides the earthing of the cable shields connected to the module

and interconnects the GND signals of the module and the drive.

Oninstallation of the module, the signal and power connection to the drive is

automatically made through a 20-pin connector.

Numbersinbrackets refer to the layout drawing in section layout.

Mounting procedure:

1. Pull out the locking tab(7)

2. Insert the modulecarefully into the option slot until the retaining clips lock the

module into position

3. Pushinthelocking tab(7)

4. Fastenthescrew(included) to the stand-off.

If you need to removetheadapter moduleafter it has been installed into the drive,

use asuitable tool (e.g. small pliers) to carefully pull out the locking tab.

Note:Correctinstallation of thescrewisessentialforfulfilling the EMCrequirements

and for proper operation of the module.

Generalencoderwiringguidelines

Theencodersshouldbeconnectedtotheencoderinterfacemodulewithashielded

instrumentationcable,preferablywithtwistedpairs.Seetheencodermanualfor

additionalrequirements.Topreventtheencoderinputsfrombeingdisturbed,the

cableshieldmustbeconnectedtothechassis.Theconnectionismadeautomatically

throughthemetalhoodoftheplug,ifthecablesareconnectedthroughthecable

clampoftheplug.