Siemens 200 Failsafe P070 to P072, P070 Failsafe Timer, P071 Failsafe Material Level

Failsafe (P070 to P072)

P070 Failsafe Timer

The time for invalid measurements to elapse before Failsafe State activates.

Primary Index	Single Point Model	Dual Point Model
	Global	Transducer
Values	Range: 0 to 15 minutes
	Preset 10.00 minutes
Altered by	• P003 Maximum Process Speed
Related	• P129 Relay Failsafe

Once activated, the Failsafe State initiates the following:

1.The material level is reported based on P071 Failsafe Material Level.

•The unit responds to the new level as programmed (control and alarm relays activate as defined by the programming).

•Individual relays can have independent failsafe responses. See P129 Relay Failsafe.

2.The appropriate error is displayed:

•LOE for loss of echo from the transducer

•Short for a shorted transducer cable

•Open for a cut transducer cable

•Error for all other problems

When modifying the preset value, set it short enough to protect the process but long enough to avoid false alarms. Only use No Delay (0.0 Minutes) for testing.

P071 Failsafe Material Level

The material level reported when a Failsafe State is initiated.

Primary Index	Level
	Range: -4999			Value in units or % (-50% to 150% of span)
		to 9999
Values		HI		Level goes to maximum span
		LO		Level goes to 0 span (Empty)
		HOLd	*	Level remains at last reading
	•	P001 Operation
	•	P006 Empty
	•	P007 Span
Related	•	P111 Relay Control Function
	•	P112 Relay ON Setpoint
	•	P113 relay OFF Setpoint
	•	P129 Relay Failsafe

Select the Failsafe Material Level based upon the relay operation required during failsafe operation.

7ML19981FB06 MultiRanger 100/200 – INSTRUCTION MANUAL Page 131

Parameters