EST3 Installation and Service Manual

Service and troubleshooting

Table 8-38: Signature module trouble messages

Trouble message Possible cause Possible solution

Relay switched

Data circuit ground fault

Vector Current Too Large

Vector Current Too Small

EEPROM Not Initialized

EEPROM Write Time-out

A/D Time-out

Bad EEPROM

Defective A/D converter

EEPROM Write Verify Fault Defective EEPROM

Line Monitor Trouble

Class A Trouble

3rd Wire Trouble

3rd Wire Trouble

Signature data circuit voltage low

Open or shorted input or output circuit

Voltage is out of range on the wire that supplies 24 Vdc power to SIGA-UM.

Voltage on the wire supplying

24 Vdc smoke power to

SIGA-UM is out of range.

RAM Not Programmed

Relay toggled from actual state

See Table 8-32

Devices on the Signature data circuit are drawing too much current during the mapping procedure.

Devices on the Signature data circuit are not drawing enough current during the mapping procedure.

EEPROM not properly programmed

Bad RAM

Manually reset relay

Replace Module

See Table 8-32

Short or low resistance shunt on

Signature data circuit

Excessive circuit resistance

Defective base

Defective wiring

Replace module

Replace module

Replace module

Replace module

Check Signature data circuit

Check input / output circuit wiring

Check power supply output

Check wiring

Check power supply output.

Check wiring

Replace Module

Displaying trouble tables

The Trouble Tables display eight categories of active device trouble. Each list displays the short address or serial number of the devices experiencing that trouble condition. The total number of devices in each list is indicated at the bottom of the list.

The active troubles displayed in the Trouble Tables should be compared with a device’s trouble history displayed in the

Display Device Trouble lists, to determine any possible trouble pattern.

8.62 EST3 Installation and Service Manual

Service and troubleshooting

Click Here to Close LPC Diagnostics

Click Here to Select SDC Circuit

Click Here to Select Loop Controller Card

Click Here to Select Cabinet

Trouble Tables Tab

Internal Fault List

Device Type Fault List

Personality Fault List

Unexpected Fault List

Click Here to Reveal

Additional Fault Lists

Total Column

Fault Count

Figure 8-21: Trouble Tables dialog box

[TSCRN5.CDR]

Internal fault

The Internal Fault List indicates an internal problem with a

Signature Device or Module. Refer to the Displaying Device

Trouble section to determine the specific cause.

Device type fault

The Device Type Fault List indicates that the device type entered in the SDU does not agree with the device type installed on the

SDC.

Personality fault and sensitivity fault

The Personality Fault List indicates that the personality code

(p-code) of a Signature module entered in the SDU does not agree with the p-code of the module actually installed on the circuit. The Sensitivity Fault List indicates that the sensitivity of a Signature detector entered in the SDU does not agree with the sensitivity of the detector actually installed on the circuit.

Personality and sensitivity faults should be corrected by the system, and these faults should clear automatically.

Unexpected fault

The Unexpected Fault List displays the serial number of devices which appear on the actual circuit, but which were not listed in the SDU program.

EST3 Installation and Service Manual 8.63

Service and troubleshooting

Communication fault

The Communication Fault List indicates those Signature devices that are not communicating with the Signature controller module.

Open fault

The Open Fault List indicates those Signature modules with an open on their input or output circuits (all p-codes except 8.)

Ground fault

The Ground Fault List indicates those Signature modules with a ground fault on their input or output circuits (all p-codes except

8.)

Short fault

North American marketplaces:

The Short Fault List indicates those Signature modules with a short on their supervised output circuits (p-codes 5, 7, 15, 16.)

European marketplace:

The Short Fault List indicates those

Signature modules with a short on their supervised input circuits

(p-codes 1, 2, 3, 4, 9, 10, 11, 12, 13, 14, 20, 21) and those

Signature modules with a short on their supervised output circuits (p-codes 5, 7, 15, 16.)

Brand fault

Incorrect brand of Signature devices installed on SDC.

8.64 EST3 Installation and Service Manual