Emerson IFT9701 instruction manual Optional LCD, Fault outputs, Normal conditions indicated by LED

Troubleshooting continued

Figure 8-1 Transmitter terminals and diagnostic LED

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

Milliamp output terminals

–+

20–30V

or

N L 85–250V~

Ground screw for power supply

Pulse output terminals

Intrinsically safe terminal block

Sensor wiring compartment

(intrinsically safe)

Case ground

Diagnostic LED

Shields (GND) for wiring to sensor

(remote-mount transmitters only)

8.3.2Optional 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 8-2explains the operating conditions indicated by the LCD.

8.3.3Fault 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

58 Model IFT9701 Transmitter Instruction Manual