Failsafe (P070 To P072) - Siemens HydroRanger 200 Instruction Manual

Failsafe (P070 to P072)

P070 Failsafe Timer
The time for invalid measurements to elapse before Failsafe State activates.
Primary Index
Values
Altered by
Related
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
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
Values
Related
Select the Failsafe Material Level based upon the relay operation required during failsafe
operation.
Page 130
Single Point Model
Global
Range: 0 to 15 minutes
Preset 10.00 minutes
• P003 Maximum Process Speed
• P129 Relay Failsafe
.
Level
Range: -4999
to 9999
HI
LO
HOLd *
• P001 Operation
• P006 Empty
• P007 Span
• P111 Relay Control Function
• P112 Relay ON Setpoint
• P113 relay OFF Setpoint
• P129 Relay Failsafe
HydroRanger 200 – INSTRUCTION MANUAL
Dual Point Model
Transducer
Value in units or % (-50% to 150% of span)
Level goes to maximum span
Level goes to 0 span (Empty)
Level remains at last reading
P129 Relay
7ML19985FC03