Emerson 5X00489G01 New and Original Goods Enrichment

Description

The 5X00489G01 following defifinitions apply to the restrictions listed below:

— Rshunt = contact shunt resistance

— Rcontact = resistance associated with a closed contact

— Rreturn = resistance of the common return line

— Rline = resistance of the non-common cable length to and from the contact

— Rwiring = Rcontact + Rline + 16Rreturn

— Rfault = resistance from either line to ground which causes a ground fault

Figure 21-5 shows possible cable resistances 5X00489G01 that affect contact input performance.

The following restrictions apply:

• Under no-ground-fault conditions or if the channel return (low) line has a

ground fault:

— Rshunt across contact must be ≥ 10k ohms to always recognize an open

contact as open.

— Rshunt across contact must be ≥ 50k ohms to maintain the high-level contact

wetting voltage.

• If the input connection from a channel has a ground fault with the contact open:

— Rshunt across contact must be ≥ 150k ohms to guarantee ground fault is

detected.

• For a ground fault on the 5X00489G01 input or return connection to a channel:

— Rfault from either line to ground must be ≤ 5K ohms to guarantee detection

of the ground fault.

• With or without ground fault conditions:

— Rwiring through fifield wiring to contact must by < 100 ohms to always

recognize a closed contact as closed.

Word address 13 (D in Hex) is used to write to the Module Confifiguration Register

and to read the Module Status 5X00489G01 Register. The status register can be read by using the

Point Information window at an Operator Station (see the Bit Pattern Field on the

Hardware Tab).

Bit Data Description –

Configuration Register

Data Description –

Status Register (Read)

0 Confifigure Module. Module confifigured

(1=confifigured; 0=unconfifigured)

1 Force internal error. Internal error

(1=forced error; 0=no forced error)

2 – 5 Not used. Not used.

6 Enable digital input blown fuse signal and

module attention for blown fuse.

Status of enable digital input blown fuse signal and

module attention for blown fuse.

7 Not used. Should be set to zero (0). Blown fuse for digital input.

8 Contact input fifield card (enable contact input

auxiliary voltage 5X00489G01 failure signal and module

attention for auxiliary voltage failure and

ground fault detection circuitry).

Status of contact input fifield card (enable contact input

auxiliary voltage failure signal and module attention

for auxiliary voltage failure and ground fault

detection circuitry).

9 Not used. Should be set to zero (0). Auxiliary voltage failure for contact input.

10 Enable module attention for a GND fault. Status of Enable module attention for a GND fault.

11 Not used. Should be set to zero (0). GND fault.

12 Disable chatter control. Disable chatter control.

13 Reset chatter control counters on buffer

unfreeze (instead of decrementing every 100

milliseconds).

Status of reset chatter control counters on buffer

unfreeze (instead of decrementing every 100

milliseconds).

14 Not used. Should be set to zero (0). Clock synchronized.

15 Not used. Should be set to zero (0). Not used.

1 Applicable for confifiguration of the Contact Input module (1C31233G04). See Section 21-6 for confifiguration of

the Digital Input module.

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