Overview This chapter states the general safety instructions that must be followed when installing and operating the FEN-31. In addition to the safety instructions given below, read the complete safety instructions of the specific drive you are working on.
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8 Safety instructions The motor cable terminals of the drive are at a dangerously high voltage when mains power is applied, regardless of motor operation. There can be dangerous voltages inside the drive from external control circuits even when the drive mains power is shut off. Exercise appropriate care when working on the unit.
Intended audience The manual is intended for the people who are responsible for commissioning and using the FEN-31. The reader is expected to have a basic knowledge of electrical fundamentals, electrical wiring practices and how to operate the drive. Before you start It is assumed that the drive is installed and the drive power supply is switched off before starting the installation of the extension module.
12 Hardware description FEN-31 HTL Encoder Interface 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.
Hardware description 13 FEN-31 connections ■ The following figure shows an overview of the connections of the FEN-31. ACSXXX (optional) ACSXXX FEN-31 Sensor (optional) Encoder...
CHASSIS The shields of connectors X81 and X82 and plug X83 are connected to chassis. The fixing screw connects the chassis to ground. Compatibility FEN-31 is compatible with the following encoders: • Differential push-pull HTL encoders • Single-ended push-pull HTL encoders •...
Installation 15 Installation Contents of this chapter This chapter contains instructions on installing the HTL Encoder Interface module. WARNING! Follow the safety instructions given in this guide and in the drive Hardware manual .
16 Installation Setting the supply voltage WARNING! Selecting the wrong supply voltage may damage or break the encoder. Two supply voltages are available on pins 4 and 5 in connector X81. Only one of them can be used to supply an encoder. The supply voltage is selected by placing a jumper on connector X81 as described in the figure below.
Installation 17 Mounting WARNING! Before installation, do the electrical safety precautions given in section Safety instructions. Note: Before mounting the option module, set the supply voltage jumpers as described above. The option module is to be inserted into the option slot of the drive. See the drive hardware manual for more information.
18 Installation Name Description Direction PTC/Pt1000/KTY-84 Temperature sensor (nonisolated) Shield HTL input pin order (X82) ■ Name Description Direction A channel A channel - inverted B channel B channel - inverted Marker pulse Marker pulse - inverted Shield TTL encoder emulation output pin order (X83) ■...
Installation 19 Digital latch input pin order (X84) ■ Name Description Direction +24V_B Supply voltage COM_B Common DI_1+ Latch signal 1 DI_1- Latch signal 1 return DI_2+ Latch signal 2 DI_2- Latch signal 2 return General encoder wiring guidelines The encoders should be connected to the encoder interface module with a shielded instrumentation cable, preferably with twisted pairs.
22 Installation Wiring for single-ended open collector HTL encoder and single ended ■ open emitter HTL encoder Encoder FEN-31 SHLD +15V_B +24V_B COM_B Temperature PTC/Pt1000/KTY-84 PTC/Pt1000/KTY-84 sensor SHLD PTC/Pt1000/KTY_0V Signals name Connector plug and pin number X82-1 X82-3 X82-5 X81-4...
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For open collector HTL encoder, the OUT+ channel (A+/B+/Z+) is actively driven low when the transistor closes the circuit. When the transistor opens the circuits, the signal line is passively pulled high by the 1.5 kilo-ohm load resistor in FEN-31. ENCODER...
Configuring the internal pull-up resistor dip switches In FEN-31, a 1.55 kΩ resistor is connected to each signal line (A+, B+, Z+) from one end and the other end is, by default, floating. These floating ends can be connected via DIP switches between connectors X81 and X82.
Installation 27 Power consumption and cable length The power consumption of the module depends on many factors, eg, max. speed of the motor, encoder pulse number per revolution, encoder cable length and leakage capacitance. The following figure shows the approximate power consumption of an encoder with differential outputs, based on actual measurements.
The encoder output channel that leads when the drive runs Forward should be connected to FEN-31 input A, the output channel that trails to FEN-31 input B. The zero reference output channel (usually marked 0, N or Z) needs to be connected...
This chapter contains instructions on starting up the Encoder Interface module. Programming The FEN-31 is programmed through drive parameters. These parameters must be checked and adjusted according to the encoder data sheet. For further information, see the drive Firmware Manual.
This chapter shows how to trace faults with the status LEDs on the HTL Encoder Interface module. Diagnostic LEDs FEN-31 is equipped with two diagnostic LEDs. The STATUS LED describes the status of FEN-31 and the ENC ST LED the status of the encoders. Description of the LED signals is presented below. Colour Description...
34 Technical data Dimensions 31 mm 1.22 in 26 mm 63 mm 1.02 in 2.48 in General Max. power consumption 350 mA at 24 V (Max. combined power consumption of encoders, latches and cabling 5W) Degree of protection IP20 Ambient conditions The applicable ambient conditions specified for the drive in its Hardware manual are in effect.
Technical data 35 HTL encoder input (X81 and X82) +15 V DC ± 20% 200mA (max.) - HTL encoders Supply voltages +24 V DC ± 20% 200mA (max.) - HTL encoders External power supply, if connected, has to be in the range of 10-24 V DC Signal frequencies up to 300kHz can be detected by the HTL encoder input.
Product and service inquiries Address any inquiries about the product to your local ABB representative, quoting the type designation and serial number of the unit in question. A listing of ABB sales, support and service contacts can be found by navigating to www.abb.com/searchchannels.