Name: Hach sc200
Brand: Hach
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Chapter 4,

I/O Modules

• The ModCon75 Controllers is delivered with one Snap-in I/O

Module installed at the factory. An optional Remote Relay Module

is also available and is described in detail in Appendix C.

Snap-in I/O Modules

• Snap-in I/O Modules provide a ModCon75 Controller with an on-

board I/O configuration.

• The Snap-in I/O Module plugs directly into the back of the

ModCon75 Controller, creating a self-contained control unit with a

local I/O configuration.

Features

• 16 isolated digital inputs, including two high-speed counter inputs,

type pnp/npn (source/sink)

• 10 isolated relay outputs

• Four isolated pnp/npn (source/sink) transistor outputs

• Three analog inputs (not used in this application).

To avoid electric shock, turn OFF power to the unit before

installing I/O modules.

Installing a Snap-in I/O Module

• Snap-in I/O Modules can be installed before or after mounting the

unit.

• The protective cap covering the I/O connector on the back of the

controller:

• must cover the connector when a Snap-in I/O Module is not

attached to the controller

• must be removed before installing a module.

1. Pry off the cap with a screwdriver.

2. Line up the ModCon75 Controller circular guidelines with the

Snap-in I/O Module guidelines (FIGURE 4-1).

WARNING

4-1

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