Emerson IFT9701 - Manual (Page 66)

58 Model IFT9701 Transmitter Instruction Manual
Troubleshooting continued
Figure 8-1 Transmitter terminals and diagnostic LED
8.3.2 Optional LCD
Except for ATEX Zone 1 areas, the transmitter is available with an optional LCD. The 5-digit LCD is
on the cover of the field wiring compartment, and indicates the mass or volume flow rate or the
operating condition of the flowmeter. Table 8-2 explains the operating conditions indicated by the
LCD.
8.3.3 Fault outputs
The transmitter produces downscale or upscale outputs to indicate a fault.
• Downscale: The milliamp output goes to 2 mA; the pulse output goes to 0 Hz.
• Upscale: The milliamp output goes to 22 mA; the pulse output goes to 7200 Hz.
Unless otherwise specified on the order, jumpers are set so the transmitter generates downscale fault
outputs. To change jumper settings for fault outputs, see Section 2.3.
Table 8-1 Normal conditions indicated by LED
Diagnostic LED does this: Condition
Blinks ON once per second (25% ON, 75% OFF) Normal operation
Remains ON Startup and initialization, zero in progress, transmitter hardware
failure
Blinks OFF once per second (75% ON, 25% OFF) Slug flow (density below or above user-defined limits)
Blinks ON 4 times per second Fault condition
Remains OFF Power-supply failure, transmitter hardware failure
Power supply
• If transmitter fails to
produce outputs,
check for reversed
polarity
• Make sure actual
power supply
matches power
supply shown on
label
• AC power applied to
DC transmitter will
damage transmitter
• Power-supply fuses
are not replaceable
Ground screw
for power supply
Case ground
Diagnostic LED
Shields (GND) for wiring to sensor
(remote-mount transmitters only)
Sensor wiring
compartment
(intrinsically safe)
Pulse output
terminals Milliamp output
terminals
– +
20–30V
or
N L
85–250V~
Intrinsically safe
terminal block