Kobold MSR User manual

Operating Instructions
for
Low-action
and snap-action contacts
Model: MSR

MSR
page 2 MSR K03/0522
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
6.Electrical Connection .................................................................................... 5
6.1MSR-010 ............................................................................................ 5
6.2MSR-020 ............................................................................................ 6
6.3MSR-011 ............................................................................................ 7
7.Technical Information .................................................................................... 8
8.Order Codes ................................................................................................. 9
9.Dimensions ................................................................................................. 10
10.EC Declaration of Conformance ................................................................. 11
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

MSR
MSR K03/0522 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Contact protection relay, model: MSR
4. Regulation Use
Any use of the contact protection relay, model MSR, which exceeds the
manufacturer’s specifications may invalidate its warranty. Therefore, any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.

MSR
page 4 MSR K03/0522
5. Operating Principle
Multifunctional relays comprise a power supply unit, pulse generator, isolation
amplifier and switching amplifier, which serves to increase the switching capacity,
while as the control loop is connected to low voltage. The switching capacity of
reed contacts is very often exceeded especially by switching capacitive &
inductive loads; this causes the reed contacts to stick – thus giving rise to
dangerous functional faults.
A contact protection relay is used to eliminate this problem by significantly
improving the switch capacity and service life of the reed contacts.
In addition, types MSR-010 and MSR-020 have a time response. The chatter
effect is thus almost totally eliminated, resulting in no switching operation taking
place when the contact opens or closes briefly. The switching operation is thus
clearly defined. Type MSR-011 is a bistable interval relay with latching and is thus
suitable for an interval switching, for example for pump control. Design and
construction of the contact protection relay satisfy VDE regulations 0110
insulation class c/250 V. The housing, made of polyamide 6.6, can be mounted
by clip-on mounting on 35 x 7.5 mm rail (according to DIN 50022), or panel-
mounted, by individual screw attachment.
Available models:
MSR 010 Monostable contact protection relay for connection of a single
contact, e. g. limit value switches types S-1 / M-1 or S-2 / M-2.
MSR 020 Monostable contact protection relay for connection of one double
or two single contacts, e. g. limit value switches types S-1 / M-1 or
S-22 / M-22.
MSR 011 Bistable contact protection relay for connection of two contacts
(interval operation). With this bistable version, the switching
condition of one contact is memorized temporarily (latched) until
the other contact is operated (No permanent storage - unlatched).

MSR
MSR K03/0522 page 5
6. Electrical Connection
Please make sure that the voltage values of your plant match the
voltage values of the unit. Make sure that the electrical supply lines
are de-energised.
Attention! Incorrect connections can lead to damage of the unit
electronics.
6.1 MSR-010
The multifunctional relay is supplied with the corresponding voltage via
terminals N and L. When the supply voltage has been switched on (and the
connected limit value switch is not operated, i.e., contact is open) the potential
free change-over contact of the MSR-relay is non-operative (see type plate). By
operating the limit value switch (contact is closed) the change-over contact is
energized. When the supply voltage is disconnected, the potential free change-
over contact of the MSR relay returns to its inoperative condition.

MSR
page 6 MSR K03/0522
6.2 MSR-020
The multifunctional relay is supplied with the corresponding voltage via
terminals L and N. When the supply voltage has been switched on (and the
connected limit value switch is not operated, i.e.; contact is open) the potential
free change-over contact of the MSR-relay is non-operative (see type plate). By
operating the limit value switch (contact is closed) the change-over contacts are
energized. When the supply voltage is disconnected, the potential free change-
over contact of the MSR relay returns to its inoperative condition.
Important Note:
If desired, multiple relays (also MSR-010 and MSR-020 together)
could also be switched together. This way, one control output
(terminal 12 or 22) can drive max. 4 control inputs (terminal 13 or
23). The max. permissible contact per signal input resistance
reduces to 2 kΩ (1 kΩ by supply 24 VAC/DC). Bridging between
control outputs is not necessary. Should a control output drive
control inputs of multiple MSR-relays, one must ensure a
uniform reference potential. The terminal 82 of MSR-Relay must
be connected in this case.

MSR
MSR K03/0522 page 7
6.3 MSR-011
The multifunctional relay is supplied with the corresponding voltage via
terminals L and N. When the supply voltage has been switched on (the
connected limit value switch is not operated, contact is closed, contact is open)
the contacts are operated at the potential free change-over contact.
If contact of limit value switch is opened (contact remains open), the contacts at
the change-over contact stay closed. Only when contact is closed (contact has
no influence on the switching behaviour any longer) the potential-free change-
over device of the MSR relay returns to its inoperative condition (see type
plate).
If contact of the limit value switch opens again, the contacts at the change-over
contact remain inoperative. If contacts close, the contacts at the change-over
contact are operated again (interval operation).
This is a bistable execution, intermediately memorising the switching condition
of one contact during the interval until the other contact is operated (no
permanent memorising).
When the supply voltage is interrupted, the potential free change-over contact of
the MSR series returns to its inoperative condition. If both contacts are closed,
the preferential situation will depend on the respective transitional resistances
and is considered as undefined in this case.

MSR
page 8 MSR K03/0522
7. Technical Information
Auxiliary power: 230 VAC –10%, +6%, 50-60 HZ
Power input: typically 6 VA
Pulse-control voltage: 35-40 VDC (electrically isolated)
Pulse widrh ratio: 1:100 (typically)
Allowed contact-
contact resistance: ≤ 4.7 kOhm
Pulse width: 500 µs (typically)
OFF delay: approx. 0.5 s
Relay output: MSR 10 (1 floating changeover contact)
MSR 20 (2 floating changeover contacts)
MSR 11 (1 floating changeovcer contact-bistable-)
max. 250 VAC / 8A
min. 24 VDC / 0.1 A
Voltage output: 24 VDC, max. load: 20mA
Protection: terminals IP20
Case material: polyamide 6.6, colour red
Temperature range: 0°C...70°C
Mounting: standard rail 35 x 7.5 mm

MSR
MSR K03/0522 page 9
8. Order Codes
Rela
y
output Order no.
1 floatin
g
chan
g
eover contact MSR-010
2 floatin
g
chan
g
eover contacts MSR-020
1 floatin
g
chan
g
eover contact - bistable MSR-011

MSR
page 10 MSR K03/0522
9. Dimensions