PG.
- With SRV02 probe: In this mode the board continually compares A0 set acceleration expressed in “g”
(g= 9.8 m/sec²) with that measured by the SRV02 probe and keeps the two values equal To do this, each
event that jeopardizes system stability and the required movement of material is compensated for with an
automatic increase/decrease of power delivered to the vibrator. In this way, parity between the two
values A0 and As and optimal performance is restored.
- Without SRV02 probe: In this mode the board can compensate for changes in line voltage and
automatically supply the vibrator with more or less power. On the CFF and DCFF boards, the line voltage
(VA) can also be displayed.
Open loop. Put 0 on Menu 81 - “VI” control parameter
- With SRV02 probe: In this mode the board powers the vibrator and measures the acceleration (AS) but
is not able to compensate for any changes in the system.
- Without SRV02 probe: In this mode the board powers the vibrator but is not able to compensate for any
changes in the line voltage. On the CFF and DCFF boards, the line voltage (VA) can also be displayed.
N.B. The “Open loop” mode should only be used when performing functional tests or inspections on the
vibrator.
SRV02 PROBE
The SRV02 accelerometric probe inserted in the mobile part of the vibrator supplies an analog signal with
the wave form of acceleration and a value proportional to it
An microprocessor’s algorithm shows on the display the value of the acceleration in terms of “g”
As mentioned, the SRV02 probe has to be attached to the vibrator structure and connected to the CFV or
CFF or DCFF board by means of a shielded cable.
The probe detects vibration of the machine and transmits an analog signal to the microcontroller of the
control board which will convert it (by means of an internal analog-to-digital converter) to a value which will
be suitably processed. Whenever the vibrator changes speed due to the material or wear and tear of the
springs, the controller uses this probe to automatically correct acceleration and, in some cases, frequency to
keep vibrator speed and material flow constant.
SPECIFICATIONS FOR OPERATING A SOLENOID VALVE
When a solenoid valve is operated using a board, special connection cables must be used for over-voltage
protection or a diode parallel to the solenoid valve must be inserted with the cathode set to positive.
MANAGING MULTIPLE CONTROLLERS IN RS-485 NETWORK
Brovind controllers can be network-managed by means of an RS-485 bus.
This management can be made by a PLC (with free protocol serial port) or a Personal Computer.
At your request, Brovind Elettronica provides you with the communication protocol for the communication
with PLC or PC.
MAINTENANCE OF CONTROLLERS
The controllers must be serviced directly by Brovind personnel or by technical personnel previously
authorized by Brovind.
If a controller malfunctions, replace it with a backup and configure it in the same way as the replaced
controller.
TROUBLESHOOTING
K If the display does not light up when the controller is switched on, do as follows:
- check that the power cable is connected to the mains.
- open the controller box and check that the power is connected correctly.
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