ZIEHL MSF220K User manual

ZIEHL industrie –elektronik GmbH + Co KG
Daimlerstr.13, 74523 Schwäbisch Hall, Germany
+ 49 791 504-0, [e-mail], www.ziehl.de
Temperature Relays and MINIKA® Mains Monitoring Digital Panelmeters MINIPAN® Switching Relays and Controls Measuring Transducers Grid- and Plant Protection
Operating Manual MSF220K
updated: 2022-11-30 / dr
from Firmware: 0-00
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- PTC-relay for dry transformers

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Table of contents
1General Notes......................................................................................................................................... 2
2Application and short description......................................................................................................... 2
3Overview of functions............................................................................................................................ 2
4Connecting plan ....................................................................................Fehler! Textmarke nicht definiert.
5Display and controls .............................................................................Fehler! Textmarke nicht definiert.
6Detailed description ..............................................................................Fehler! Textmarke nicht definiert.
7Important notes .....................................................................................Fehler! Textmarke nicht definiert.
8Installation .............................................................................................................................................. 5
9Putting into operation ...........................................................................Fehler! Textmarke nicht definiert.
10 Troubleshooting and remedies ............................................................Fehler! Textmarke nicht definiert.
11 Technical data ........................................................................................................................................ 6
12 Dimensions - Design K..........................................................................Fehler! Textmarke nicht definiert.
13 Disposal .................................................................................................................................................. 7
1 General Notes
Compliance with the following instructions is mandatory to ensure the functionality and safety of the
product. If the following instructions given especially but not limited for general safety, transport,
storage, mounting, operating conditions, commissioning and disposal / recycling are not observed,
the product may not operate safely and may cause a hazard to the life and limb of users and third
parties.
Deviations from the following requirements may therefore lead both to the loss of the statutory
material defect liability rights and to the liability of the buyer for the product that has become unsafe
due to the deviation from the specifications.
2 Application and short description
General
The PTC-relay MSF220K is especially suitable for monitoring temperatures in dry transformers.
Relay K2 (Alarm 2/Trip) is connected in operating current mode. It makes no trip signal when supply voltage
is switched on. A delayed switching time relay in series is not required. Thus the MSF220K can also be used
when the supply voltage for the device is provided by the monitored transformer.
The built in test button allows easy test of the device and the connected components.
Additional terminals make it easy to bridge supply voltage to K1 and K2.
3 Overview of functions
•2 PTC-circuits with different temperatures for monitoring
•monitoring of sensor errors (PTC circuit is monitored for break and short circuit)
•TEST-button for testing relays
•LEDs signal state of relays
•ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm.
Signals also error in any sensor (when activated) and interruption of supply voltage.
•ALARM 2 in operation current mode (relay K2, 1 NO contact). No signal when switching on
and off the supply voltage.

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4 Connection plan
5 Display and controls
1 LED Power on
2 LED Alarm 2
3 LED Alarm 1
4 Button Test
6 Detailed description
PTC sensors with different nominal response temperatures (NRT) can be connected to MSF220K.
When everything is ok, relay K1 (Alarm 1) is picked up (11-14 closed) and relay K2 (Alarm 2, trip) is released
(21-24 open). Green LED Power is on.
When nominal response temperature of PTC 1 (T1) is exceeded, relay K1 releases and red LED Alarm 1 is
on.
Relay K1 picks up again, when temperature at sensor comes below switching back temperature.
When temperature of transformer continues rising and nominal response temperature of PTC 2 (T2) is
exceeded, relay K2 (Alarm 2) picks up (21-24 closed) and red LED Alarm 2 is on.
Monitoring of sensors for errors (short circuit or interrupt) can be activated.
The contacts at both relay are potential free.
Function of relays can be tested with button test.

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table of function
overload: PTC > 3650 Ω
normal: PTC < 1600 Ω
∞/0: PTC = ∞ Ω / PTC = 0 Ω -> Sensor error
PTC-temperature sensor
alarm relays
alarm LEDs *
PTC 1 (T0-T1)
PTC 2 (T0-T2)
alarm 1
alarm 2
AL1
AL2
normal
normal
off (terminal 11-14)
off
overload
normal
on (terminal 11-12)
off
overload
overload
on (terminal 11-12)
on (terminal 21-24)
normal
overload
off (terminal 11-14)
on (terminal 21-24)
only at parameterization: “monitoring sensor error on “
∞/0 *1
normal *1
on (terminal 11-12)
off
normal *1
∞/0 *1
on (terminal 11-12)
off
overload *1
∞/0 *1
on (terminal 11-12)
on (terminal 21-24)
∞/0 *1
overload *1
on (terminal 11-12)
on (terminal 21-24)
∞/0 *1
∞/0 *1
on (terminal 11-12)
off
* ) LED:
off
on
flash
7 Important notes
WARNING!
Dangerous electrical voltage
Disconnect power before working on equipment.
Read and understand these instructions before installing, operating or maintaining
the equipment.
To use the equipment flawless and safe, transport and store properly, install and start professionally
and operate as directed.
Only let persons work with the equipment who are familiar with installation, start-up and use and who
have appropriate qualification corresponding to their function. They must observe the contents of the
instruction manual, the information written on the equipment and the relevant security instructions
for the setting up and the use of electrical units.
Attention!
Before switching on make sure that the operational voltage Us of the type- plate and
the mains voltage are the same! Before switching on ensure, that the supply voltage
Us written on the lateral type plate corresponds to the mains voltage!
When installing the device into the switchgear cabinet, please observe the max. admissible
temperature. Care for both, sufficient clearance to other devices or sources of heat or enough forced
draught. If cooling is made more difficult, e.g. close devices with increased surface temperature or by
handicap of airflow cooling, the permissible ambient temperature has to be reduced.
In case of failure of supply voltage, the monitored unit is not protected any more.
The operator must ensure, that a failure is detected, e.g. by monitoring Alarm 1 (K1)
or by testing the unit regularly.

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8 Installation
The unit can be installed as follows:
•Installation in switchgear cabinet on 35 mm mounting rail according to EN 60715
•With 2 screws M4 for installation on wall or panel
Connection according to connection plan.
9 Putting into operation
Parameterization of monitoring sensor errors (factory settings: monitoring sensor errors off )
•Power off the device
•Press button [Test] and keep pressed
•Power on the device, and keep pressed the button [Test]
➢After 5s blinks the green LED, release button [Test]
•Press Button [Test] again to switch the function
➢monitoring sensor errors on (red LEDs on)
➢monitoring sensor errors off
•Keep button [Test] pressed (2s) to save the function (the Power LED blinks fast, release
button [Test])
•The MSF220K makes a reset and restarts with the set function
Checking the function of device
•Power on the device (green LED Power is on)
•The relay K1 switch on (Terminals 11-14 closed) and the red LEDs AL1 and AL2 are off
Function of button [Test] under operation
•Press button [Test] and keep pressed
•The green LED signals the status of monitoring sensor errors
➢monitoring sensor error on: LED blinks -> 2 x fast –pause - 2 x fast –pause - …)
➢monitoring sensor error off: LED blinks evenly
•after 5s: Alarm 1 becomes active (relay K1 = off, terminals 11-12 closed, red LED AL1 = on)
•after 8s: Alarm 2 becomes active (relay K2 = on, terminals 21-24 closed, red LED AL2 = on)
•release button [Test] to chancel the test function
Even if no temperature warning is monitored with alarm 1, the function of the relay K1 must be evaluated,
otherwise the monitoring can fail unnoticed (missing supply- voltage, equipment failure etc.).
Connect a resistor (0,1kΩ…1,5kΩ) to sensor input PTC 1 (T0-T1), also 0Ωif monitoring sensor error = off.
10 Troubleshooting and remedies
•LED Power is off
Make sure that supply voltage is connected correctly (+/-) to terminals A1/A2 and
correspond with the voltage on type plate
•Alarm 1 / Alarm 2 always active (LED AL1 / AL2 is on)
Make sure, that the PTCs are correct connected and the voltage at the terminals is <
DC 0,8 V. The resistance of the PTCs in cold state should be < 1,5 kΩ.
Check PTC’s only with measuring voltages of < 2.5 V.
•LED Power blinks and Alarm 1 is active (button Test is not pushed, not at parameterization)
internal device error, switch it off and on. If the error persists please replace device.
Send in together with a description of the occurred malfunction.
•Alarm 1 constantly active (K1 off, 11-12 on) and at least one alarm LED blinks:
monitoring sensor error active, check sensors for short circuit and interruption
monitoring sensor error in PTC 1 (AL1 blinks) and/or sensor error in PTC 2 (AL2
blinks)

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11 Technical data
Power supply (A1, A2)
Rated supply voltage Us
see type plate on device
Model Us = AC/DC 24...240 V
DC 20,4 … 297 V / AC 20 … 264 V
Frequency
AC 40…500 Hz, from AC 80 V: 10…500 Hz
Power consumption
< 1 W < 3 VA
Model Us = AC 220...240 V
AC 0,9 Us -1,1 Us 40 ... 62 Hz
Power consumption
< 2 W < 2 VA
Relay output
EN 60947-5-1
Contacts
1 change-over contact , 1 NO contact
Switching voltage
max. AC 300 V; DC 300 V
Minimum voltage / current
12 V / 10 mA
Switching current Ith
max. 5 A
Current per terminal
max. 5 A
Switching power (ohm resistive load)
max. 1250 VA
max. 120 W at DC 24 V
rated operating current Ie
AC-15 Ie = 3 A Ue = 250 V
rated operational voltage Ue
DC-13 Ie = 2 A Ue = 24 V
DC-13 Ie = 0,2 A Ue = 240 V
UL electrical ratings
250 V ac, 3 A, general use
240 V ac, 1/4 hp, 2.9 FLA
120 V ac, 1/10 hp, 3.0 FLA
C 300
PTC thermistor input (T0-T1, T0-T2)
acc. DIN 44081 / DIN 44082
Number
2 x 1…6 PTC thermistor in series
Rated response temperature TFS
60 °C … 180 °C
Response tolerance
±6 °C
Temperature monitor cut-out-point
3,3 kΩ…3,65 kΩ…3,85 kΩ
Temperature monitor reclosing point
1,5 kΩ…1,6 kΩ …1,65 kΩ
Collective resistance cold thermistor
≤ 1,5 kΩ
Terminal voltage (PTC thermistor)
≤ 2,2 V at R ≤ 3,65 kΩ ≤ 5 V at R = ∞
Terminal current (PTC thermistor)
≤ 1 mA
Power consumption
≤ 1,5 mW
Short circuit monitor
On: approx. 20 Ω Off: approx. 40 Ω
Interruption monitor
On: approx. 20 kΩ, only if temperature monitor cut-
out-point has not previously exceeded,
Off: approx. 1,6 kΩ
Test conditions
EN 60947-8
Rated impulse voltage
4000 V
Overvoltage category
III
Pollution degree
2
Rated insulation voltage Ui
300 V
Transformer
EN 61558-2-6 (VDE 0551)
On-period
100 %
EMC immunity (industry)
EN 61000-6-2
EMC emission
EN 61000-6-3
Installation conditions
Fitting position
any
Rated ambient temperature range
-20 °C ... +55 °C
Storage temperature
-20 °C ... +70 °C

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Temperature for wiring (admissible)
-5 °C …+70 °C
Altitude
up to 2000 m
Climatic conditions
5-85% rel. F., no condensation
Vibration resistance EN 60068-2-6
2…13,2 Hz ±1 mm
13,2...100 Hz 0,7g
Housing
Design K
Plastic Material
Polyamid PA 66, UL 94 V-2
Dimensions (H x W x D) mm
without terminals: 75,6 x 22,5 x 110,8 mm
with terminals: 75,6 x 22,5 x 115,7 mm
Line connection 1 wire
1 x 0,5 ... 2,5 mm2 (AWG 22-14)
Stranded wire with wire-end sleeves
1x 0,14 ... 1,5 mm2
Insulation Strip length
8 mm
Tightening torque
0,5 Nm, UL: 7 lb-in
Protection housing/terminals EN 60529
IP 20
Fitting position
any
Fastening, fixing
standard rail 35 mm EN 60715
Optional: Screw mounting
M4, only with additional bolt
Weight Model AC 220...240 V
approx. 140 g
AC/DC 24...240 V
approx. 110 g
Subject to technical modifications
12 Dimensions - Design K
Dimensions in mm
1
Bottom
2
Top
3
Bolt
4
Screw
5
Holes for screw mounting
13 Disposal
Disposal should be carried out properly and in an environmentally friendly manner in
accordance with legal provisions.
ZIEHL is registered with the EAR Foundation under WEEE no .: DE 49 698 543.