(datum / name): 10.12.08 Su/Fz
Z. Nr.: 1004 0710.2
Page 1 von 4
Type: MSF 220 SE
ZIEHL industrie-elektronik GmbH + Co KG, Daimlerstr.13, D-74523 Schwäbisch Hall, Tel.: +49 791 504-0, Fax: -56, e-mail: [email protected]
Operating manual
MSF 220 SE
Application
The PTC-resistor trip device MSF 220 SE monitors the winding temperature of machines and
equipment. Signals, that can be used as ”early warning" or ”malfunction" (switching-off), are
transmitted as soon as the admissible limit temperature is exceeded.
Two PTC-circuits can be connected to this unit. The integrated rise-delay time ensures a
reliable mains voltage build-up.
Function
*
2 PTC resistor circuits, 1 to 6 PTC each (max. cold resistance of circuit 1500
Ω
each)
*
potential-free contact for alarm 1
*
potential-free contact for alarm 2
*
voltage of pin 3 is connectet to pin 1 with a time delay of 2 sec., replacing an additional
timing relay.
*
alarm 3 for check of relay K3
*
LED´s signal state of relays K1 and K2
*
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 SE can furthermore be used
advantageously when combining it with operating current releases. For additional devices, the
control voltage is available at terminal 1 time-delayed. In case of a breakdown of the supply
voltage, the control voltage is available at terminal 7 and can be used as a message.
(Attention! This message will also be given for approx. 2 s. after switching-on.)
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 31, 14 and 31, 24. As soon as
the temperature of the early warning has been reached, relay K1 releases (terminal 31, 12
closed), the alarm 1 is given. If the temperature of malfunction is reached, also relay K2
releases (terminal 31, 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 resp. are switched on again.
MINIPAN
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