5 Installation at Site
41 of 126
Amacan S
1589.837/01-EN
Set the following limits:
▪
Alert at 130 °C
▪
Cut-out of the pump set at 150 °C
As an option, the upper bearing can also be equipped with a temperature sensor
(core identification 16 and 17). Its connection and settings are identical with the
above. Check in the data sheet whether the pump set is equipped with temperature
monitoring of the upper bearing.
5.4.1.4.5 Vibration sensor
As an option, the pump set can be supplied with a vibration sensor in the area of the
upper bearing.
The vibration sensor measures the root-mean-square value of the radial vibration
velocity at the upper bearing. The sensor has an integrated signal converter with a
standardised output (4 to 20 mA). This allows simple integration into existing PLC
systems or process control systems.
Table 9:
Technical data of the sensor
Characteristic
Value
Measuring range
4 - 20 mA at 0 - 20 mm/s
Measurement error
< 5 %
Long-term stability
+/- 1 % in 10 years
Maximum shock load
500 g
Frequency range
2 Hz - 1000 Hz
Resonant frequency
> 18 kHz
Output impedance
200 Ω max.
Voltage supply
18 ‑ 30 V (smoothed)
Working resistance
50 - 100 Ω
Connecting the vibration
sensor
41 42
mA
+ -
18 - 30V DC
Fig. 26:
Connecting the vibration sensor
We recommend the following settings for vibration monitoring with the (optional)
vibration sensor fitted at the factory:
▪
Alarm to be triggered at v
eff
= 11 mm/s
– This vibration limit requires remedial action.
– In general, pump operation may continue until the causes of the change in
vibration level have been detected and remedies have been determined.
▪
Cut-out at v
eff
= 14 mm/s
– If this vibration velocity is exceeded, continued pump set operation may
result in damage.
– Immediately take suitable measures to reduce vibrations or switch of the
pump set.
