Emerson 1C311181G02 Remote Mau I/O Module

Description

The 1C31181G02 GND Fault Attention Enable bit is “0” after the Contact Input mod

ule power is cycled. This bit must be set by the Controller if a ground

fault is to be treated as a catastrophic failure. If Bit 9 is set, a ground fault

will cause an attention status to be returned to the Controller upon ac

cessing the module, and no point data can be read. If the bit is not set, a

ground fault will not inhibit the Controller from 1C31181G02 reading point data. In

the latter case, if more than one ground fault occurs on the field wiring

to a Contact Input Module, false point data may possibly be read on

channels with open contacts.

P (Green) Power OK LED. Lit when the +5V power is OK.

C (Green) Communications OK LED. Lit when the 1C31181G02 Controller is communicating with the

module.

E (Red) External Fault LED. Lit when GND Fault bit (Bit 10) of the Status Register is

set (see Table 8-5). This indicates that a ground fault has occurred in the fifield

wiring. An attention status is generated when the External Fault LED is lit only

if the GND Fault Attention Enable bit (Bit 9) is set.

I (Red) Internal Fault LED. Lit whenever the Force Error bit (Bit 1) of the

Confifiguration Register (see Table 8-5) is set or when the on-board +48V/+10/

V auxiliary power supply fails.

Also lit when a timeout of the watchdog timer occurs when Controller stops

communicating with module.

An attention status is always generated when the LED is lit.

CH1 – CH 16 (Green) Point Status LED. Lit 1C31181G02 when the input contact of the LED’s corresponding

channel is closed.

The Compact Contact Input Module, comprised of an Electronics module, provides

16 contact input current detecting channels with common returns. The fifield side

circuitry and terminal connections for three channels are shown in Figure 9-2.

Additionally, a foam insert that includes a wiring diagram is available for placement

in the Personality module cavity in the base unit.

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