NORD Drivesystems BU0700 - Manual (Page 113)

6 Error messages
BU 0700 GB-1411 Subject to technical alterations 113
Display Error Cause
 Remedy
Group Detail in
P700 / P701
E020 20.0 External RAM error
System error in program execution, triggered by EMC interference.
 Please comply with wiring guidelines in Section 2.9.
 Use additional external mains filter. (Chap. 8.3 / 8.4 EMC)
 FI must be very well "earthed".
20.1 Watchdog
20.2 Stack overflow
20.3 Stack underflow
20.4 Undefined opcode
20.5 Protected instruction
20.6 Illegal word access
20.7 Illegal instruction access
20.8 EPROM error
20.9 Error Dual-Port-Memory
21.0 NMI (not used by hardware)
21.1 PLL error
21.2 AD overrun
21.3 PMI access error