Iskra FPC 200 - Self-Diagnostic; System Status Register; Operating States

Functionality
80 USER MANUAL FPC 200 - 3/2017
2.10 Self-diagnostic
Several self-monitoring functions run continuously to check the operation of hardware and software while device is in
service. Device status is represented by internal watchdog that can be connected to Ready Relay output via Relay
mapping menu. Digital output 6 can be set to operate as ready relay as it is designed to operate as such. FPC 200
distinguish between two major types of internal faults:
 Hardware internal faults
 Software internal faults
System status register
System status register is a 16 bit memory register dedicated to correspond with specific internal fault type. It is possible
to access this register by Modbus RTU. Internal fault is detected if value of stored bit is equal to 1.
Operating states
Three operating states are used to increase reliability of protection relay self-diagnosis. According to internal fault type,
the device will start to function in designated operating state.
Operating state
Description
Output signal
Protection functions
Normal state
FPC 200 is fully operational
- Ready LED ON
- Ready relay ON
- All functions are operating
Error state
Fault is detected.
If internal fault is eliminated in
5 s time, device returns to
Normal state.
- Blinking Ready LED
- Continuous sound beeping
- System status register = 1
- HMI is displaying internal
fault
- Protection functions are blocked.
- Output relays are blocked.
Confirmed error state
Fault is detected and manually
confirmed.
- Blinking Ready LED
- System status register = 1
- Protection functions are blocked.
- Output relays are blocked
Table 82 Operating states of the device.
Error detection
Restart
Restart = 2x
Manual confirmation
Normal state
Error state
Confirmed
error state
Software
internal fault
Hardware
internal fault
Internal fault
eliminated in 5s
Figure 2.53 Diagram of FPC 200 self-diagnostic error detection