Operating instructions

15
6.4 Hardware Maintenance:
The Taco 3100 Smart Transmitter has no moving parts and
requires little maintenance. If a transmitter fails, it must be
returned to Taco, Inc. for inspection, repair, or replacement.
6.4.1 Test Terminals:
The test terminals are marked TEST on the terminal block. The
test and negative terminals are connected to the power terminals.
So long as the voltage across the receptacles are below the diode
threshold voltage, no current will pass through the diode. To
ensure that current isn’t leaking through the diode, test the read-
ing with an indicating meter. The test connection should not
exceed 10 ohms. A resistance value of 30 ohms will cause an
approximate 10 percent of reading error.
6.4.2 Disassembling the Housing:
The transmitter is designed with dual-compartment housing; one
contains the electronics module, and the other contains all wiring
terminals and communication terminal.
6.4.3 Fail Mode Jumper Switch and EEPROM-Write:
Fail-mode jumper switch and EEPROM-Write is located behind
the front cover.
Figure 18: Test Terminals
Figure 19: Structure of Housing
Figure 20: Structure of Electronics Module
APPENDIX 1 – 3100 SMART PRESSURE TRANSMITTER - LCD DISPLAY CODE:
MESSAGE DESCRIPTION
ADJ-U
Zero adjustment value – used to configure transmitter
when it is out of range (on higher side)
ADJ-L
Zero adjustment value – used to configure transmitter
when it is out of range (on low side)
ZERO Initial message when using Zero button
SPAN Initial message when using Span button
BT-ERR Button Sequence error
P-LOCK Button input error - Protect Locked
ZT-ERR Zero Trim value is over limit (10%)
-TR- Zero Trim done
ZR-ERR Setting Limit error when executing Zero button function
SP-ERR Setting Limit error when executing Span button function
-ZR- Zero button function done
-SP- Span button function done
-ZA- Zero Adjustment done
DONE Configuration completed using buttons
RNGOVR Limit error when executing other setting function
LCD_OV Over Values for LCD
MESSAGE DESCRIPTION
SCD-ER Sensor Code Error
F-RST Flash Setting Data Reset
F-LOCK Flash Setting Data Reset, Protect Locked
F-FAIL Flash Setting Data Reset Failure
-FR- Flash Reset done
A-RST Analog EEPROM Initializing Start
A-STOR Analog EEPROM Stored
A-FAIL Failure in writing configuration values on to the EEPROM
of transmitter CPU
-AC- Analog EEPROM Configuration done
S-FL Sensor Fail
S-OP Sensor Overpressure
AEP-RF Check error with EEPROM on CPU board
TS-FL Temperature Sensor Error
AEP-WF Analog EEPROM write fail
EOSC Crystal Element Defect Alarm
FAVE Flash Acess Violation