GEA Bock HGX34P 2 pole - Manual (Page 20)

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96116-11.2014-DGbFE
5| Electrical connection
Temperature monitoring connections:
Motor winding: Terminals 1 - 2
Thermal protection thermostat: Terminals 3 - 4
Restart prevention: Terminals 5 - 6
5.5 Electronic trigger unit MP 10
The compressor motor is fitted with cold conductor temperature sensors (PTC) connected to the
electronic trigger unit MP 10 in the terminal box. Readiness to operate is signalled by the H3 LED
(green) after the power supply is applied. In the case of excess temperature in the motor winding, the
unit switches off the compressor and the H1 LED lights red.
The hot gas side of the compressor can also be protected against overtemperature using a thermal
protection thermostat (accessory). The H2 LED (red) is provided for the protection function.
The unit trips when an overload or inadmissible operating conditions occur. Find and remedy
the cause.
5.6 Connection of the trigger unit MP 10
Anschluss des Auslösegerätes MP 10
Der elektrische Anschluss des MP 10 ist gemäß Schaltplan vorzunehmen. Das Aus-
lösegerät ist mit einer Sicherung (F)
von max. 4 A träge abzusichern. Um die Schutz-
funktion zu gewährleisten, ist das Auslösegerät als erstes Glied in den Steuerstrom-
kreis zu installieren.
Anschlüsse Temperaturüberwachung:
Motorwicklung: Klemmen 1 - 2
Heißgasseite: Klemmen 3 - 4
Klemmen 1 - 6 am Auslösegerät MP 10 und Klemmen PTC 1 und PTC 2 am
Verdichterklemmbrett dürfen nicht mit Netzspannung in Berührung kommen.
Das Auslösegerät und die PTC-Fühler werden sonst zerstört.
Klemmbrett
Abb.: schematisch
PTC1 PTC2
Terminal box
Fig. 24
INFO The unit has a restart prevention device. After you have rectified the
fault, interrupt the mains voltage. This unlocks the restart prevention
device and the LEDs H1 and H2 go out.
ATTENTION
Terminals 1 - 6 on the trigger
unit MP 10 and terminals PTC
1 and PTC 2 on the compres-
sor terminal board must not
come into contact with mains
voltage. This would destroy the
trigger unit and PTC sensors.
The supply voltage at L1-N
(+/- for DC 24 V version) must
be identical to the voltage at
terminals 11, 12, 14 and 43.
INFO Connect the trigger unit MP10 in accordance with the circuit dia-
gram. Protect the trigger unit with a delayed-action fuse (F) of
max. 4 A. In order to guarantee the protection function, install the
trigger unit as the first element in the control power circuit.