GE 8118-DO-AC 8-channel DO, 20-250Vac isolated, unpowered

General

The 8129-IO-DC Discrete Input/ Output Module provides the interface to 8 channels,

which may be configured in any combination of discrete inputs and outputs.

Combined inputs and outputs

Each of the 8 channels of the 8129-IO-DC Discrete Input/Output Module may be configured, 

on a channel-by-channel basis, as either an input or an output.

When configured as an input, the channel is suitable for use with dry contacts 

– with power supplied from the Module.

When configured as an output, the channel is capable of switching up to 2.0A (maximum of 6.0A continuous per module).

Output channels are used with solenoids, valves and alarms.

Diagnostics

Comprehensive diagnostic tests are performed on the module and each of its channels, including tests for stuck ON and stuck OFF output switches.

Live maintenance

The field wiring connections to the 8129-IO-DC Discrete I/O Module are classified as non sparking and can only be 

worked on in a Class 1. Division 2 or Zone 2 hazardous area once the Bussed Field Power connection has been isolated.

Note: the Bussed Field Power connection must also be isolated before removing or replacing the module.

PAC8000 Process Controllers

The PAC8000 Controllers include a Process Controller featuring distributed control system (DCS)- style function block programming; 

a Logic Controller featuring 61131-style programmable logic controller (PLC) programming; 

and a Hybrid Controller that provides both programming styles in the same unit. 

A SIL 2 SafetyNet Controller and an RTU Controller are also available, which provides DNP3 communication for the PAC8000 family. 

The 8521-EB-MT Bus Interface Module, for remote I/O applications, shares the same hardware as the controllers listed below. 

It can be upgraded from a bus interface module to a full controller by firmware download, which is especially useful in ongoing legacy system replacement. 

• 8 isolated, universal, input channels

• Configurable on a channel by channel basis: 4-20mA, THC, RTD, resistance &voltage

• 250V ac rms channel to channel isolation

• Thermocouple types B, E, J, K, N, R, S, T, W3. W5. Russian K, Russian L

• RTD Types Pt100. jPt100. Pt200. Pt500.Ni120. Cu10

• Volt input types ±120mV, 0-1V, 0-5V,1-5V, 0-10V, ±10V

• 2 or 3-wire RTDs

• 2 or 4-wire transmitters

• Non-incendive field circuits

• 24 V dc bussed field power required

Tradeoff of Resolution for Module Throughput

The module offers ~15 bit effective resolution on all

channels. The module also offers several analog-to

digital conversion options that allow higher speed

signals to be selectively read more quickly on a

channel-by-channel basis.

Note however, that at the highest speeds, uncertainty

in value of the lower bits will increase, resulting in

reduced resolution. The following table indicates the

approximate effect on resolution of higher speeds.

CONFIGURABLE PARAMETERS

Sensor type

• User selectable

Alarms

• High-high, high, low and low-low

Alarm deadband (hysteresis)

• User defined value

Input dead zone

• User defined value

Channel status

• Active / inactive

Filter/sample rates

• User selectable