ALLEN BRADLEY 1734-SSI Interface Absolute Encoder Module

Model/Part Number

1734-SSI

Description

POINT I/O Synchronous Serial Interface Absolute Encoder Module

Number of SSI Channels

1

Encoder Type

Any absolute encoder supporting standard SSI protocol (linear, rotary, optical distance measuring)

Data Format

Most-Significant Bit Aligned

Physical Interface for Clock & Data

RS-422

SSI Data Rate

125 kHz, 250 kHz, 500 kHz, 1 MHz, 2 MHz (Software selectable)

SSI Bits per Word

2…31 (Software selectable)

SSI Word Delay Time (Tp)

16…65535 µs (Software selectable)

SSI Word Length

4 bytes (32 bits)

SSI Features

Gray/Binary Code, Gray-to-Binary Conversion, Increasing/Decreasing Count Indication, 2 SSI Word Comparator Values, Word Latching with I1 Input

SSI Position Forming Time

≥0.5 ms

SSI Cable Type

UL CM/AWM 2464/CSA Type CMG FT4 (Shielded Twisted Pairs)

SSI Cable Length (Max)

125 kHz: 320 m (1050 ft)

250 kHz: 160 m (525 ft)

500 kHz: 60 m (195 ft)

1 MHz: 20 m (65 ft)

2 MHz: 8 m (25 ft)

SSI Sensor Power

450 mA, 10…28.8V DC

SSI Clock Drive Current (Max)

125 mA

ON-State Voltage

0V DC

FPV - 10V

-

ON-State Current

2 mA

4 mA (@ 24V DC FPV)

5 mA

OFF-State Voltage

FPV - 5V

-

FPV

OFF-State Current

1.2 mA

-

-

Input Impedance

-

3.6 kΩ

4.7 kΩ

Input Filter Time

-

0.5 ms

-

Terminal Base Screw Torque (Max)

0.6 N•m (7 lb•in)

LED Indicators

All powered from the logic side

Module Location

1734-TB, 1734-TBS wiring base assembly

POINTBus™ Current

110 mA @ 5V DC

Power Dissipation

0.94 W

Isolation Voltage

50V (Continuous), Basic Insulation Type, Tested @ 1250V AC for 60 s (Field to System)

Field Power Bus Supply Voltage

Min: 10V DC @ 450 mA

Nom: 24V DC @ 450 mA

Max: 28.8V DC @ 450 mA

Dimensions (H × W × D)

56 × 12 × 75.5 mm (2.21 × 0.47 × 2.97 in.)

Conductor Category

1 – on signal ports

Wire Size

0.34…2.1 mm² (22…14 AWG) solid/stranded copper wire rated @ 75°C (167°F), 1.2 mm (3/64 in.) insulation max

Wire Type

Copper, Shielded on encoder port

Weight

0.032 kg (0.07 lb)

Keyswitch Position

2

Enclosure Type Rating

None (open-style)

Temperature Code

North America: T4A

UKEX/ATEX: T4

IECEx: T4