Sonic Alert DCP301 Self-diagnostics only when certain functions are operating, Alarm code display

Chapter 9. TROUBLESHOOTING

■Self-diagnostics only when certain functions are operating

● MFB (motor feedback) adjustment error

This error is detected when MFB automatic adjustment is not going smoothly on 2G output models.

The corresponding alarm code is displayed when this error is detected.

To clear this alarm, either execute automatic adjustment again or turn the power OFF then back ON again.

■Alarm code display

When an input error or controller error is detected in the basic display state, the alarm code and regular display are displayed alternately every second on the program No. and segment No. displays. The table below shows alarm codes and alarm descriptions.

When two or more alarms occur at the same time, the alarm codes are displayed from the smallest number upwards together with the regular display.

However, note that when setup data C 6 7 has been set to “1”, alarm codes are not dis- played.

■Alarm categories

PV range alarm groups: A L 0 1 to A L 1 2

Controller alarm groups: A L 8 1 to A L Q Q, and low battery voltage

(BAT LED on console blinks in case of low battery voltage.)

Alarm Code	Alarm Name	Description	Remedy
A L 0 1	Input 1 over-range	Input 1 has exceeded 110%FS	Check input 1
A L 0 2	Input 1 under-range	Input 1 has fallen below -10%FS
A L 0 7	Input 1 RTD disconnection A	RTD line A is disconnected.	Check line of RTD (resis-
			tance temperature detector)
A L 0 8	Input 1 RTD disconnection B	RTD line B or lines ABC are
			connected to input 1 for
		disconnected.
			disconnection, and terminal
A L 0 q	Input 1 RTD disconnection C	RTD line C is disconnected.
			connections.
A L 1 0	MFB disconnection	MFB (Y, T, G) line(s) is	Check MFB wiring.
		disconnected.
A L 1 1	MFB short-circuit	Y-G line or Y-T-G line is short-
		circuited.
A L 1 2	MFB adjustment impossible	Faulty wiring, motor	Check wiring of MFB switch-
		incompatibility etc.	ing relay or motor specifica-
			tions.
A L 7 0	A/D trouble	A/D converter has malfunctioned.	Ask for repair.
A L 8 1	Board configuration error	Faulty board configuration	Ask for repair.
A L q 6	Program error	Damaged program setup data	Check program setup, and
			reset damaged data. *1
A L q 7	Parameter error	Damaged parameter setup data	Check parameter setup, and
			reset damaged data. *2
A L q 8	Adjustment value error	Damaged analog input/output	Ask for repair.
		adjustment data
A L q q	PROM error	Damaged system program	Ask for repair.

*1 A L q 6 goes out even if program setup data other the damaged data is reset. *2 A L q 7 goes out even if parameter setup data other the damaged data is reset.

9-2