M91-2 Unitronics

24 VDC, 12 pnp/npn digital inputs, *2 universal inputs, high-speed counter/shaft encoderinput, 10 transistor outputs, 2 analog outputs, I/0 expansion port, RS232/RS485 port

Power supply

Permissible range

Maximum current

consumption

Digital inputs

Nominal input voltage

Input voltages for pnp (source)

Input voltages for npn (sink)

nput current

Input impedance

Response time

(except high-speed inputs)

Galvanic isolation

Input cable length

High-speed counter

Resolution

nput freg.Minimum pulse

24VDC

20.4VDC to 288VDC with lessthan 10% ripple

145mA@24VDC(pnpinputs)250mA@24VDC(npn inputs)

12 pnp (source) or npn (sink)inputs. See Note 1.24VDC.See Note 2

0-5vDC for Logic 017-28.8VDC for Logic"1'

17-288VDC/<2mA for Logic00-5VDC>6mA for Logic'1

8mA@24VDC

3K2

10mS typical

None

Up to 100 meters, unshielded

Specifications below apply wheninputs are wired for use as a high-speed counter input/shaftencoder, See Notes 3 and 4.16-bit

10kHz max.

40us

Notes:

1. Al 12 inputs can be set to pnp (source) or npn (sink) via a single jumperand aporopriate wiring.

2. npn (sink) inputs use voltage supplied from the controller's power supply.3. Input #0 can function as either high-speed counter or aspart of a shaft encoder. In each case, high-speed input specificatlonsapply. When used as a normal digital input, normal input specificationsapoly.

4. Input #i can function as either counter reset or as a normal digital input:in either case, specifications are those of a noral digital input.

This input may also be used as part of a shaft encoder.

In this case high-speed input specifications apply.

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