Rhein-Nadel Automation GmbH
11
VT-BA-ESR-ESM3000-EN_2020 / 07.05.2020 SJ
8.
Commissioning
8.1.
Assembling position
8.2.
Preliminary steps
•
Check that the unit is correct for the local mains supply (rating plate information) and that it is correctly rated
for the feed system.
•
Connect the controller according to the connection diagram
•
When applications with frequently on and off cycles are required, use the intended enable input. It is
prohibited to open the current circuit with a switch or a contactor while the feeder is running.
8.2.1. Important points
Using the control units described in this document, it is possible to adjust the feed system that it runs in
resonance. In this condition it is possible to obtain excessive output for a very low set point setting. Therefore
extreme care should be taken to avoid causing damage to the drive coil, through hammering.
In practice it is not possible to run at resonant frequency without accelerometer feedback because the system would be
unstable and uncontrollable. The system must be set safely off resonance i.e. either above or below the natural
frequency.
Resonant frequency:
Depending on the spring and mass design of the feeder system it is possible to have resonance
at more than one frequency. These additional resonance points are multiples of the main frequency. For this reason in
critical situations it is possible that the automatic frequency search will not find true resonance and in such cases the
natural frequency must be determined manually.
8.2.2. Operating frequency of the feeder coil
It is possible that the current flowing through the coil will increase for a small frequency adjustment. and so this should
be checked with a true RMS instrument for each new application as well as monitoring the coil for heat build-up.
The coil should be designed for the correct operating frequency to prevent excessive current draw and the consequential
overloading of the coil.
8.2.3. Measurement of the output voltage and current
The voltage and current cannot be measured with a regular instrument because the controller output uses an electronic
inverter with a pulse width modulation signal. An effective measuring instrument such as a moving iron meter (analog)
must be used. It is recommended that an analog instrument is used rather than an electronic multi-meter which will give
a misleading reading.
8.3.
Putting the equipment into operation
1. Establish the vibrating frequency.
2. Establish the power of the feed system (maximum permissible current draw).
For a new feeder where settings are unknown: (see also comments below)
Without connecting the feeder
, select parameter FAC in menu C210 (reset factory settings), press the cursor key to
reset (SAFE) and press the P key to leave the menu. The factory settings are listed in the table in section 7, headed
settings
! Comments !
It is possible that a special parameter set, for a machine manufacturer, has been pre-stored under a user code and
these can be recalled. In such instances specific machine settings will be loaded and so the next steps are not relevant.
Basic settings:
•
Connect feeder.
•
Set frequency (refer to feeder data sheet). Menu C096 parameter F.
•
Check current limit (refer to feeder data sheet). Menu C040 parameter I (shows the current limit as a
percentage of maximum). If applicable use service menu for setting.
•
Increase set point, observe feeder, check running.
Attention
Please fasten the devices on a vibration-free underground and take care for sufficient air circulation.
