SMAR ld301 - Diagnostic Via Transmitter

LD301 - Operation and Maintenance Instruction Manual
5.2
ERROR MESSAGES POTENTIAL SOURCE OF PROBLEM
OUTPUT FIXED
 Output in Constant Mode.
 Transmitter in Multidrop mode.
OUTPUT SATURATED
 Pressure out of calibrated Span or in fail-safe state (Output current in 3.8 or 20.5
mA).
SV OUT OF LIMITS
 Temperature out of operating limits.
 Temperature sensor damaged.
PV OUT OF LIMITS
 Pressure out of operation limits.
 Sensor damaged or sensor module not connected.
 Transmitter with false configuration.
LOWER RANGE VALUE TOO
HIGH
 Lower value exceeds 24% of the Upper Range Limit.
LOWER RANGE VALUE TOO
LOW
 Lower value exceeds 24% of the Lower Range Limit.
UPPER RANGE VALUE TOO
HIGH
 Upper value exceeds 24% of the Upper Range Limit.
UPPER RANGE VALUE TOO
LOW
 Upper value exceeds 24% of the Lower Range Limit.
UPPER & LOWER RANGE
VALUES OUT OF LIMITS
 Lower and Upper Values are out of the sensor range limits.
SPAN TOO SMALL
 The difference, between the Lower and Upper values is less than the 0.75 x (minimum
span).
APPLIED PRESURE TOO HIGH
 The pressure applied was above the 24% upper range limit.
APPLIED PRESURE TOO LOW
 The pressure applied was below the 24% lower range limit.
EXCESS CORRECTION
 The trim value entered exceeded the factory-characterized value by more than 10%.
PASSED PARAMETER TOO
LARGE
 Parameter above operating limits.
PASSED PARAMETER TOO
SMALL
 Parameter below operating limits.
Table 5.1 - Error Messages and Potential Source
Diagnostic via Transmitter
NOTE
D0 and M0 ranges are available only for 6.05 versions or greater.
Symptom: NO LINE CURRENT
Probable Source of Trouble:
 Transmitter Connections
 Check wiring polarity and continuity.
 Check for shorts or ground loops.
 Check if the power supply connector is connected to main board.
 Power Supply
 Check power supply output. The voltage must be between 12 and 45 Vdc at transmitter
terminals.
 Electronic Circuit Failure
 Check the main board for defect by using a spare one.