Kiepe Elektrik JMNC Operating Instructions Manual
Electronic Rotational Speed Monitoring Device
Type JMNC
Device Identification No.: 93.045 365.001/.002/.003
OPERATING INSTRUCTIONS
2
CE-Sign and Conformity
The device meets the requirements of the valid European and national regulations.
Conformity has been proved and the corresponding declarations and documents are deposited at the manufacturer.
JMNC Operating Instructions
Table of Contents
Table of Contents
1 For your own Safety........................................................................................6
1.1 Intended Application...................................................................................................................6
1.2 Symbols......................................................................................................................................6
2 Transport, Packing, Storage, and Disposal..................................................7
2.1 Transport and Packing ...............................................................................................................7
2.2 Storage.......................................................................................................................................7
2.3 Disposal......................................................................................................................................7
3 Design and Function.......................................................................................8
3.1 Design ........................................................................................................................................8
3.2 Function Principle of the JMNC................................................................................................10
3.2.1 General.....................................................................................................................................10
3.2.2 Run-up Bridging .......................................................................................................................10
3.2.3 Underspeed Monitoring/Switching Function (with run-up bridging)..........................................11
3.2.4 Overspeed Monitoring (without Run-up Bridging) ....................................................................12
3
JMNC Operating Instructions
Table of Contents
4
4 Technical Data .............................................................................................. 13
4.1 Safety Regulations .................................................................................................................. 13
4.2 Supply Voltage ........................................................................................................................ 13
4.3 Reference Data ....................................................................................................................... 13
4.4 Input Data ................................................................................................................................ 14
4.5 Output Data ............................................................................................................................. 14
4.6 Environment ............................................................................................................................ 15
4.7 Design ..................................................................................................................................... 15
4.8 JMNC Dimensions ................................................................................................................... 16
4.9 Built-in Dimensions ISO Housing ............................................................................................ 17
5 Mounting and Dismounting ......................................................................... 18
5.1 Scope of Delivery .................................................................................................................... 18
5.2 Mounting.................................................................................................................................. 18
5.3 Electrical Connection............................................................................................................... 20
5.3.1 Connection Assignment........................................................................................................... 21
5.3.2 Connection Samples ............................................................................................................... 22
5.4 Dismounting the Rotational Speed Monitoring Device ............................................................ 24
JMNC Operating Instructions
Table of Contents
6 Setting the Rotational Speed Monitoring Device JMNC............................25
6.1 Before Setting the Device.........................................................................................................25
6.2 Setting the Underspeed with Run-up Bridging .........................................................................26
6.2.1 Basic Settings...........................................................................................................................26
6.2.2 Setting the Run-up Bridging Period (Start-up delay) ................................................................26
6.2.3 Setting the Switch Point for Underspeed Monitoring................................................................28
6.2.4 Underspeed Monitoring, Increasing the Switch Point Delay ....................................................31
6.3 Setting the Overspeed Monitoring (without Run-up Bridging) ..................................................31
6.3.1 Basic Setting ............................................................................................................................31
6.3.2 Setting the Switch Point for Overspeed....................................................................................33
7 Maintenance and Repair...............................................................................35
8 Ordering Devices ..........................................................................................35
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JMNC Operating Instructions
1 For your own Safety
6
1 For your own Safety
1.1 Intended Application
The electronic rotational speed monitoring device JMNC
is applied together with a pulse indicator for monitoring
the rotational speed of drives.
The device is intended for use in stationary installations
and in vehicles.
Applications other than specified and unauthorised modifications to the device or its components may lead to injury to persons and damage to the device for which the
manufacturer is not liable.
Make sure that the intended use is not impaired in any
way, even after unexpected outside influence on the device.
"Intended Application" particularly means that any work
performed with the device or on the device must be carried out in accordance with the present operating instructions. Only qualified personnel that are familiar with
the regulations for the prevention of accidents as well as
the standard safety rules are allowed to work on the device.
Observing the intended application protects yourself and prevents damage to the device!
1.2 Symbols
Please pay particular attention to the text passages that
are marked by the following symbols:
Danger!
Information that must be observed under all
circumstances in order to prevent the operator from being injured.
Attention!
Information that must be observed in order
to prevent damage to the device.
Helpful additional information.
JMNC Operating Instructions
2 Transport, Packing, Storage, and Disposal
2 Transport, Packing, Storage, and Disposal
7
2.1 Transport and Packing
Choose a suitable packing in order to prevent damage
to the device during transport or when sending devices
or components to Vossloh Kiepe GmbH for repair. Take
great care that the device is protected against shocks
and humidity. Thus, damage due to transport is prevented, for which the manufacturer is not liable.
2.2 Storage
Avoid significant variations in temperature that may
cause the formation of condensation water, as this might
damage the device.
The permissible storage temperature is between -35°C
to +80°C.
Attention!
Keep the device clean and dry.
2.3 Disposal
If possible, reuse the packing material or dispose of it in
an environmentally friendly way.
Send defective devices and components to Vossloh
Kiepe GmbH for correct recycling or disposal (company
address see back cover).
JMNC Operating Instructions
3 Design and Function
8
3 Design and Function
The electronic rotational speed monitoring device JMNC
is applied together with a pulse indicator for monitoring
and controlling drives. The pulses of the indicator are
analysed by the speed monitoring device which signals
the overspeeding or underspeeding of a nominal rotational speed.
3.1 Design
The electronic rotational speed monitoring device JMNC
is equipped into a solid plastic housing (8), which can be
mounted onto an operating panel by means of screws.
All indicating and operating elements are assigned to
the front side of the device (s. fig. 3-1).
Potentiometer start-up delay (1), "run-up bridging"
This potentiometer serves to set the duration of the runup bridging in between 0 and approx. 45 seconds.
Pulse selection switch (2)
Start-up delay (1)
(run-up bridging)
Pulse selection switch (2)
Fine (3)
(Fine setting of the nominal value)
LED orange (4)
(Input supervision)
LED green (5)
(Switching status indication)
Coarse (6)
(Nominal value setting)
Set button (7)
Fig. 3-1: Operating elements of the monitoring device
JMNC Operating Instructions
3 Design and Function
9
Set the required range of pulses by means of this
switch.
Switch position / Range of pulses
8 to 120 pulses/minute
I
80 to 1200 pulses/minute
II
800 to 12000 pulses/minute
III
Fine (3), fine setting of the nominal value
The setting of the nominal value can be readjusted by
± 10%. Thereby, the switching point of the output relay
can be changed about 10% of the set rotational speed.
LED orange (4), input supervision
This light-emitting diode flashes with the cycle of the indicator pulses. When the pulses increase 1500/minute,
the diode lights continually.
LED status, orange
Flashing: Pulses of the rotational speed indicator
are applied.
Permanently: Number of pulses > 1500/minute
Off: Malfunction (e. g. pulse indicator or con-
nection line defective).
By means of this light-emitting diode the switching status
of the rotational speed monitoring device can be
checked.
LED status, green
On: output relay (16) attracted
Off: output relay (16) dropped
Coarse (6), nominal value setting
By means of this potentiometer the rotational speed
monitoring devices can be aligned to the operating
speed of the drive.
Set button (7)
By pressing the red button the output relay (16) can be
controlled directly and will not drop during the setting.
LED green (5), switching status of the relay
JMNC Operating Instructions
3 Design and Function
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3.2 Function Principle of the JMNC
3.2.1 General
In connection with a rotational speed indicator, the rotational speed monitoring device JMNC is used to monitor
drives for underspeed, standstill, or overspeed.
The pulses of the rotational speed indicator are analysed by the monitoring device, which signals the underspeeding or overspeeding of a set nominal rotational
speed.
The indicator input (17) (terminals 1/2) of the rotational
speed monitoring device is designed for rotational speed
indicators complying with the npn and Namur regulations. The indicator input (17) can be monitored by
means of the light-emitting diode LED orange (4).
Any number of monitoring devices JMNC can be connected to one pulse indicator.
The output relay (16) of the rotational speed monitoring
device is a change-over contact. The current switching
status of the relay is indicated by the light-emitting diode
LED green (5).
Typ e Number/switch-over contact
JMNC 1 x change-over contact (open contact/closed
contact)
In addition, the rotational speed monitoring device JMNC is
provided with a pulse output to connect common digital rotational speed counters (see section 5.3.1, Connection As-
signment).
3.2.2 Run-up Bridging
In order to start up the plant, the rotational speed monitoring device JMNC is provided with the feature run-up
bridging.
By means of the potentiometer start-up delay (1) the period of the run-up bridging can be set in between 0 and
45 seconds. During this time, the output relay (16) remains attracted, and the plant can be started.
JMNC Operating Instructions
3 Design and Function
11
3.2.3 Underspeed Monitoring/Switching Function (with run-up bridging)
During the set run-up bridging period the output relay (16)
is attracted (see also fig. 5-4).
Rotational speed
monitoring
device
JMNC 8 and 10
the following relay contacts are
closed
After expiration of the run-up bridging period, and when
the drive operates with a constant rotational speed, the
output relay (16) remains attracted and the green LED (5)
lights. The orange LED (4) flashes in the cycle of the incoming pulses.
Underspeeding of the nominal rotational speed
If the set rotational speed is not reached, the output relay
(16) drops and the green LED (5) extinguishes (see also
fig. 5-4).
Rotational speed
monitoring
device
JMNC 9 and 10
the following relay contacts are
closed
pulses/min.
III
II
Run-up Malfunction
I
Item Description Contact closed green
I
II
III with run-up bridging 8 -10
IV
V
green LED (5) on: output relay (16) attracted
green LED (5) off: output relay (16) dropped
relay triggering time,
t = 200 ms
without run-up
bridging
number of pulses
above nominal value
number of pulses
below nominal value
Rotational speed of the drive
IV
Standard operation
JMNC
9 -10
9 -10
8 -10
9 -10
Operating speed
Switched speed
V
LED
J
Fig. 3-2: Time table for underspeed counter
JMNC Operating Instructions
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