GUDEL FlexxPump 404DLS - Error Message Handling

5.4.5 Error message: Empty
The FlexxPump issues the following signal on PIN 4 if the lubricant cartridge is empty:
Input signal PIN 2
Output signal PIN 4
U
U
+24 V
(High)
+ 0 V
(Low)
(Low)
+ 0 V
(High)
+24 V
t
t
8 s 8 s
3 s
2.3 s …
2.5 s
0.5 Hz ( 1 s High / 1 s Low)
9 s …
18 s
9 s …
18 s
1.1 or
1.2
2.1 or
2.2
Hydraulic output
t
0.15 cm³ 0.15 cm³
V
Fig.5-10 Switching time diagram: Error message: Empty
If the cartridge is empty, the FlexxPump issues a change signal (rectangular pulse) on PIN 4 between High and Low with a frequency of 0.5 Hz. The output signal at PIN 4 is High (+20...30V) during nor-
mal operation. During an actual motor run of the FlexxPump, the signal switches to Low (+0V). Normally this takes between approx. 9 and 18 seconds, depending on the length of the hydraulic hoses
and the viscosity of the lubricant. Afterwards, the signal switches back to High. You can use the signal change during motor run to calculate the emptying time of the cartridge.
Malfunction Cause Measure
Lubrication system does not lubricate Cartridge missing/empty or air in FlexxPump; pump func-
tion stopped
Insert new cartridge or vent FlexxPump; the pump continues running without
change
Table5-2 Malfunctions / Troubleshooting
Commissioning
OPERATING MANUAL Automatic lubrication system
FlexxPump 404DLS
99079191943154059_v10.0_EN-US
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