MODEL: 22LA1

http://www.m-system.co.jp/

22LA1 SPECIFICATIONS

ES-6554 Rev.8 Page 2/22

Transmission speed: 125 kbps

Data encoding: SDLC

Control procedure: NRZ

Protocol: SIN-NET (M-System's)

Error check: CRC

Cable: CPEV-0.9 dia.

Transmission distance: 500 meters

INSTALLATION

Power consumption

•AC: Approx. 5 VA

•DC: 24 V or 12 V ±10 % (ripple 10 %p-p max.) approx. 4.4

W (180 mA with 24 V) with 8-point relays at the maximum

load

Operating temperature: -5 to + 50°C (23 to 122°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Atmosphere: No corrosive gas or heavy dust

Mounting: Surface or DIN rail

Weight: 400 g (0.88 lbs)

PERFORMANCE

Permissible power failure duration: ≤ 10 msec.

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 500 V AC @ 1 minute

(I/O to transmission to reset*)

1500 V AC @ 1 minute

(power to I/O or transmission or reset*)

1500 V AC @1 minute (FG to each section)

*Reset terminals are provided only for pulse string I/O type.

DESCRIPTIONS

■ RUN Output (LED) Operation

Input unit

The LED for the Input Units (A1, A2, A4, G3, G4 and P4) turns ON when the network is on-line.

When there is an abnormality in the network, the LED turns OFF. The network is reconfigured after an abnormality.

Output unit

The LED for the Output Units (C1, C2, C7, C8, M3, M4 and U4) turns ON when the network is on-line and the unit receives data

from the corresponding Input Unit.

When there is an abnormality in the network or there is no data receiving, the LED turns OFF.

When the I/O Units are connected via the 22LS1 (DLS), once the LED turns ON, it remains ON regardless of the state of Input

Unit or the leased circuit.

When the Output Unit is connected to the DLC (for setting data from the DLC), the LED turns ON once the Output Unit receives

normal data, and remains ON even when there is no data update.

I/O Unit

The LED's operating conditions for the I/O Unit (E5 and E6) are combined ones of Input Unit and Output Unit.

Caution: When the network is reconfigured e.g. by noise interference, the RUN LED and output for all units on the network turn

briefly OFF until they are turned ON after the reconfiguration is complete.

■ Station Number (Address)

A) 1 input unit and X output units: Match the address for input and output modules. The input data can be output at several

modules.

B) I/O mixed modules: Set an even number and a consecutive number for the 2 corresponding modules.