Electrical Connections - Bühler technologies BPM Guía Rápida

BPM
Time
Fig. 2: Volume flow parameters
NOTICE! Based on experience, connecting to the control
oil line. This location typically has a moderate pressure
and an outflow of max. 400 ml/min typically does not
present a problem for the control circuit.
If there is no control circuit, the filtration/cooling circuit can
often be used alternatively.
Volume flow in L/min
Fig. 3: Flow curve for various viscosities without Minimess
connections
The image below shows the pressure difference arising de-
pending on the volume flow for different viscosities. Along
with specifying the necessary volume flow, this can be used to
estimate the necessary pressure level.
4.3 Mount
The device has two mounting options:
Orientation Mounting
method
Bottom 4 x M5
Side 2 x M6
4.4 Mechanical Load
The mechanical load of the device must not exceed the in-
formation in the following table.
Load Frequency
5 ...9 Hz
max. vibration in
9 ...16.5 Hz
all three axes
16.5 ...200 Hz
Tab. 1: Permissible mechanical loads
BX150102 ◦ 03/2021
Time
Torque Length of en-
gagement
Max. 4 Nm
Min. 5 +1 mm
(strength class 8.8)
Max. 8 Nm Min. 6 +1 mm
(strength class 8.8)
Load
Amplitude:
+/-15 mm 3 g
10 g
Fig. 4: Prohibited mechanical stress

4.5 Electrical Connections

WARNING
Faulty power supply
Danger to life – risk of injury
The device must be installed by an electrician.
Observe national and international regulations on the install-
ation of electrical equipment.
Power supply as per EN50178, SELV, PELV, VDE0100-410/A1.
Switch off the machine for installation and connect the device
per the following sections. Use a shielded sensor cable.
4.5.1 Pin Assignment (Top View)
Sensor plug pin assignment
Pin Function
1 Power supply L+
2 Power supply L-
3 TxD, CAN low [OUT]
4 RxD, CAN high [IN]
5 Digital input (Start/Stop)
6 Analog output 4...20mA
7 Switching output (Open Collector/Alarm)
8 Signal earth
Shield -
Tab. 2: Pin assignment
The sensor cable must be shielded. To ensure protective class
IP67, only use suitable plugs and cables. The tightening torque
for the plug is 0.1 Nm.
4.5.2 Analog Current Output (4..20 mA)
4.5.2.1 Measurement Without Load Resistor
The current should be measured with a suitable ammeter.
Fig. 5: Current measurement without load resistor
The ordinal numbers for the various standards are calculated
according to the following tables.
Bühler Technologies GmbH 13