User Manual (Translation of the original instructions)
Picture 1: ESW-Mini with a base plate
Electronic Vibration Monitoring Unit
ESW®-Mini (hol550)
date: December 21, 2017
technical modification possible
holthausen elektronik GmbH is certified according to DIN EN ISO 9001:2015.
ESW® is a registered trademark of holthausen elektronik GmbH, Wevelinghoven 38, 41334 Nettetal
Do not use this device as the sole monitoring device in situations where failure of the device can
result in damage to goods or personal injury.
To achieve the desired results, make sure that the device and its technical data are suitable for
use with the device/equipment and parameters which you wish to monitor.
.
The sensor is sensitive to shock. A downfall out lower height to a hard substratum can destroy
the sensor.
The location where the sensor is installed and the method used for installing the sensor have a
decisive impact on the quality of the sensor signal. The sensor may only be installed by
appropriately qualified and instructed staff.
Electrical connections must be made by appropriately skilled staff. Connection errors can lead
to malfunctioning or failure of, or irreparable damage to, the sensor and the electronics.
The ESW®-Mini should not be used on machines with a very energetic high-frequency solidborne. Through resonance apparitions in the sensor, the device can indicate a much too great
or too small value.
Powerful noise sources for instance inverters, in direct closeness of the sensor, electronics or
cabling, can result in faulty behaving of the apparatus.
Potential differences and balance currents in the mass guidance can result in faulty behaving
too.
The connection cable is resistant against many but not every type of chemicals. A defective
cable can allow chemicals to enter the housing and iireparable damage the electronic, in which
case the device would no longer work. The conditions from the mounting surrounding must be
checked and the cover material from the cable must be proofed, if it resists these requirements.
You can get an overview from the chemical resistance of the cover material from us.
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Electronic Vibration Monitoring Unit
holthausen
elektronik GmbH
ESW®-Mini (hol550)
1.1 Symbols Used in This Document
Safety instructions Safety instructions in this manual are identified by symbols.
The safety instructions are prefixed by attention-getting words
which indicate the level of danger involved.
Observe the safety instructions in all cases and proceed
carefully in order to avoid accidents, personal injury and
damage to equipment and property.
DANGER!
… indicates an imminently hazardous situation that will result
in death or serious injury if not avoided.
WARNING!
… indicates a potentially hazardous situation that may result
in death or serious injury if not avoided.
Tips and recommendations
CAUTION!
… indicates a possibly hazardous situation which can may
result in minor or moderate injury if not avoided.
CAUTION!
… indicates a potentially hazardous situation that may result
in property damage if not avoided.
NOTE!
…draws your attention touseful tips, recommendations and
information for efficient, trouble-free operation.
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Electronic Vibration Monitoring Unit
holthausen
elektronik GmbH
ESW®-Mini (hol550)
2. Performance specification
2.1. The Problem
Vibrations develop in many technical areas. Often they can be ignored or are even necessary,
but sometimes they are also undesirable or dangerous. Dangerous vibration states can also
develop from initially unnoticeable vibrations or completely unexpectedly.
The causes often lie in mechanical defects or unbalances or in improper use of the machine in
question. The consequences can include a deterioration of product quality, production losses
and safety hazards, and as a minimum increased wear.
Increased automation and, for example, high noise levels often hinder acoustic or visual
monitoring. Early detection, material treatment and protection and damage limitation offer a
significant potential for cost reductions.
2.2. Application Area
The ESW®-Miniis used to protect machines, mechanical equipment and devices and last but
not least the operating staff against the impacts of excessively high vibration stress. It
permanently monitors the level of the vibration and provides a warning if the limit level is
exceeded. The current level of the vibration parameter can also be measured at any time via
the analog output.
The frequency range and the unit of measurement result from the characteristics of the
measured object and the environmental reference. Depending on the measured object occurs
the signal estimation according to the crest value or the effective value of the measurement.
The actual measurement is given out in form of a 4 to 20mA analog-signal that can be
used without any disturbance for longer cable interconnections.
2.3. Foreseeable Misuse
2.4. Special Features
The device does not require special maintenance!
If you send the device to the manufacturer for inspection and checking, please enclose a
detailed description of the fault and provide the name of a contact person whom we can contact
if we have questions.
WARNING!
• Never change the limit level to reduce assumed false alarms.
Clarify the cause of the alarms.
• Manipulation of the switch contacts of the alarm output or dismantling
of the device disable the monitoring function.
• Every modification or change can endanger safety.
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