date / name 23.02.1999 Wl / Fz Z. Nr.: 1029 0710.1
sheet 1 of 4 Type: MSF 220 SV
MINIPAN
®
digital panel meters, temperature- and mains controlling,
special purpose instruments for customer requirements www.ziehl.d
e
ZIEHL industrie-elektronik GmbH+Co, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: +49 791 504-0, Fax: -56, e-mail: info@ziehl.de
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MSF 220 SV
Application
The PTC-resistor trip device MSF 220 SV monitors the winding temperature of machines an d
equipment. It signals “early warning" or “malfunction" (switching-off) or switches on a forced
ventilatition as soon as the nominal response temperature (NRT) in the relevant PTC-circuit is
exceeded.
Two PTC-circuits can b e connected to this unit. The integrated rise-delay time ensures a
reliable mains voltage build-up.
Function
* 3 PTC resistor circuits, 1 to 6 PTC each (max. cold resistance of circuit 1500Ω each)
* potential-free contact for switching forced cooling
* potential-free contact for alarm 1
* potential-free contact for alarm 2
* LED´s signal state of relays
* relay K3 picks up time-delayed
Note
Thanks to the delayed switching-on of the error message (approx. 2 s) after the switching-on,
this device is especially suitable where an auxiliary voltage is not available and the secondary
voltage of the monitored transformer is being used. The MSF 200 SV can furthermore b e
used advantageously when combining it with operating current releases. In case o f malfunction
of the supply voltage or of the relay, there will be no tripping of the alarms. The correct function
can be detected by monitoring the no-contacts of the relays for alarm 1 or 2 (Pins 4 or 5).
Functional description
PTC-circuits in closed-circuit current principle. When the closed-circuit current flows, both output
relays K1, K2 are picked up. Approx. 2 sec. after switching on supply power, relay K3 picks
up time-delayed, closing the contact circuits at terminals 36-14 and 36-24.
When the NRT in the PTC-circuit "VENT" is exceeded, relay K4 picks up. The relay releases
app. 20 minutes after temperature has dropped under the switching point. This ensures a
longer period of cooling.
As soon as the temperature of the early warning has been reached, relay K1 releases
(terminal 36-12 closed), the alarm 1 is given. If the temperature of malfunction is reached, also
relay K2 releases (terminal 36-22 closed). This alarm 2 can be used to switch off the
equipment. If the temperature drops to approx. 5 °C below the temperature of malfunction or
early warning, the relays K1 and K2 are switched on again.
date / name 23.02.1999 Wl / Fz Z. Nr.: 1029 0710.1
sheet 2 of 4 Type: MSF 220 SV
Technical Data
……………………
Type-Plate
Order number see type plate
Supply voltage Us / frequency
on the device
……………………
Tolerance vottage Us AC 0.9...1.1 Us DC 0.85...1.35 Us
Tolerance frequency Us 48...62Hz
PTC-resistor connection 3 x 1...6 PTC in series
Cut-out point 2,8...3,6 kΩ, typ. 3,2 kΩ
Reclosing point 1,8...2,4 kΩ, typ. 2,1 kΩ
Collective resistance of cold sensors ≤ 1.5 kΩ
Terminal voltage (sensors) ≤ 2.5 V at ≤ 250 Ω
≤ 7.5 V at ≥ 4 kΩ
Relay output contacts AgCdO
Switching voltage AC max. 400 V DC 110-250 V 0.25 A
Switching current AC max. 8 A DC 60 V 0.5A
Switching power AC max. 1100 VA DC 30 V 1.5 A
Rated continious current I
th
AC 6 A DC 24 V 5 A
Rated operational current
Ie
2A AC15 400 V 2A DC13 24 V
4A AC15 250V
Prefuse for device and contacts AC: T 4 A DC: F 2 A
Mechanical contact life 5 x 107 operations
Electrical contact life 2 x 105 operations (at max. switching capacity)
Factor of reduction at cos = 0.4 0.6 x max. switching capacity
Switching-on delay app. 2 sec.
Testing conditions VDE 0660 / VDE 0160
Rated insulation voltage AC 250 V
Isolation VDE 110 / Gr. C
Transformer VDE 0550
Test voltage between supply voltage,
relay outputs and sensor side 2.5 kV
On period 100 %
max. ambient temperature -20 ... +55 °C
Climatic category F (according to DIN 40 040)
Housing: design S-12, plug-in housing
Dimensions (H x W x D) 82 x 42 x 121 mm
Line connection 12-pole, max. 2 x 1.5 mm2 each
Protection Housing IP 40
Protection contacts IP 20
Panel inclination any
Mounting snapable on 35 mm standard rail according to DIN
or assembly with scrwes M 4
Weight app. 250 g
date / name 23.02.1999 Wl / Fz Z. Nr.: 1029 0710.1
sheet 3 of 4 Type: MSF 220 SV
Installation - Putting into operation
The plug base can be mounted either with
* 35 mm mounting rail according to DIN 50 002 or
* M4 screws
Wiring directly to plug base
* Connect wires as per wiring scheme
* Plug in electronics and fix with knurled screw
Attention!
Do not plug in device alive nor detach it from socket.
When installing the device into the switch-gear cabinet, please observe the max.
admissible temperature. Care for both sufficient clearance to other devices or
sources of heat or enough forced draught. Generally recommended mininum
clearance: 2 cm.
Before switching on make sure that the operational voltage Us of the lateral type
plate and the mains voltage are the same.
* Apply mains voltage to terminals 11 and 12.
* When device is ready for operation, relays “ALARM1” and “ALARM2” switch on
immediately, the LED’s are off. After approx. 2 s. relay “ON” picks up, terminals 3 -
4, 3 - 5 are connected.
* Relay "VENT" picks up, as soon as the input at terminal 7, 10 becomes high-resistive.
* Relay "VENT" releases 20 min. after the input at terminal 7, 10 becomes low-resistive.
* Relay “ALARM1” releases as soon as the input at terminal 8, 10 becomes high-
resistive.
* Relay “ALARM2” releases as soon as the input at terminal 9, 10 becomes high-
resistive.
* Relay “ALARM1”, “ALARM2” pick up as soon as the inputs at terminals 8, 10 ; 9,
10 become low-resistive.
* Relay “ON” releases first, as soon as the supply voltage is switched off.
Trouble-shooting and remedies
* Relays are not switched on.
Check whether supply voltage Us at terminal 11, 12 is available and corresponds to
the voltage indicated on the lateral type plate of the device.
* LED´s light up continuously.
Check whether PTC’s at terminals 7-10, 8-10 and 9-10 are connected correctly. Both
PTC’s must be connected and low-resistive.
Attention! Check PTC’s only with measuring voltages of < 2.5 V.
* In case of any other malfunctions, replace device and send it in together with a
description of the occurred malfunction.
date / name 23.02.1999 Wl / Fz Z. Nr.: 1029 0710.1
sheet 4 of 4 Type: MSF 220 SV
Wiring Scheme
A2 A1
11
=
1222
24
4 5 7 8 9 10 11 12
U
S
~~
+-
12
6
14
3
ALARM
1
ALARM 2
ON
47
48
VENT.
36
35
ALARM 1
VENT.
ALARM
2
21
Design S 12
5
104,5
82
36
23,5
38
34
80
61
5
17,5
7,5
41,5
17
41
10
82
1
12345 7689101112
11,5
16
5
2
3
1
14
27,5
116
41,5
Base
1
2
3
Cable bushing
Mounting bore-hole
Unlatching
(only with rail-mounting)
2
6 Jacks for coding-pins
1
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