Eaton ZB12 XTOB Series, Руководство пользователя

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4 Using the device
4.1 Settings
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ZB12-…, ZB32-… 11/16 MN03407004Z-DE/EN www.eaton.com
4 Using the device
4.1 Settings
Before using the overload relay for the first time, the rated current must be
set using a current setting dial on the relay (
￫
table 3, page 30 and table 4,
page 31).
4.1.1 Reset
The user can select automatic restart “A” or manual reset “H” on the
overload relays ZB12-…/XTOB…BC1 and ZB32-…/XTOB…CC1 by means of
the Reset selector button.
Figure 12:Switching options of the reset selector button
The factory set position “H” on the overload relay prevents automatic
restarts. In position “H”, the relay must be reset manually after it has tripped
by pressing the selector button.
4.1.2 Test
The ZB12-…/XTOB…BC1 and ZB32-…/XTOB…CC1 overload relays are
equipped with a test button that has an integral dual function.
Figure 13:Switching options of the Test button
Pressing the button causes the opening of auxiliary contact 95-96 and can be
used to switch off the contactor. To test the function of both auxiliary
contacts, press the “Test” button while the unit is de-energized.
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CAUTION
If the overload relay is installed at a cool location (e.g. -5 °C) und
the motor is installed at a warm motor installation site (e.g.
40 °C), it is possible that there will be a delayed release during
an overload if the devices are operated in the lower current
setting range.
H
A
TEST
NC 95
NC 96
NO 97
NO 98
OFF