3.3.8.11 Trouble Horn Signal; 3.3.8.12 Trouble Strobe Signal; Troubleshooting; System Status Light Flashing - Macurco DVP-120 User Instructions

This display example shows that the buzzer will signal a trouble condition with a triple tap signal. The buzzer signal definitions are:
1
–
2
–
3
–
4
–
5
–

3.3.8.11 Trouble Horn Signal

This display example shows that the horn will not signal a trouble condition. The horn signal definitions are:
– 1
2
–
3
–
4
–
5
–

3.3.8.12 Trouble Strobe Signal

This display example shows that the strobe will not signal a trouble condition. The strobe signal definitions are:
– 1
2
–
3
–
4
–
5
–

4 Troubleshooting

The DVP-120 is tested at the factory for reliable operation. Most problems can be traced to the set-up of configurable features and
modes, system wiring or trouble with the sensors.
Do not disassemble unit or attempt to repair or modify any component of this instrument. This instrument contains no user serviceable parts, and
substitution of components may adversely affect product performance and result in sickness or death.
4.1

System Status Light Flashing

The system status light (section 3 Operation) is normally green indicating power is present, but will change to yellow whenever the
controlling firmware detects a Trouble condition. Possible trouble conditions are:
Any configured channel has less than 4 mA flowing in the current loop
–
A sensor is reporting a trouble condition
–
Any configured channel wiring is open.
–
Internal controller board problems are detected.
–
4.1.1

Input Channel Trouble

Any time the POWER light is yellow, the first thing the technician should consider is that one of the input channels is in trouble.
Reviewing the Sensor Status displays (using the up and down keys), should reveal which channel has a problem since the gas reading
will be replaced with the word TROUBLE. Be sure that the 4-20mA output on each sensor is set to "On".
Continuous
Intermittent, one second on at two second intervals
Double tap, two beeps at 5 second intervals
Triple tap, three short beeps at 15 second intervals (default)
Off, buzzer will not sound
T r o u b l e
H o r n : 5
Figure 3-61 Horn Trouble Signal
Continuous
Intermittent, one second on at two second intervals
Double tap, two beeps at 5 second intervals
Triple tap, three short beeps at 15 second intervals
Off, horn will not sound (default)
T r o u b l e
S t r o b e : 5
Figure 3-62 Strobe Trouble Signal
Continuous
Intermittent, one second on at two second intervals
Double tap, two beeps at 5 second intervals
Triple tap, three short beeps at 15 second intervals
Off, strobe will not flash (default)
S i g n a l s
O F F
S i g n a l s
O F F
! WARNING
35