ABB 6997/60-500 Manual Del Usuario página 36

Control chip: binary input / extension unit
1.1.1.17
CAUTION
Illumination of the extension units is only permissi-
ble for pushbuttons with separate terminal N.
• he maximum line length depends on the permissible
ripple voltage of the extension unit inputs. The ripple
voltage, however, must not exceed 100 V (this
corresponds to a line length of approx. 100 m).
• Extension unit pushbuttons are directly connected to
the control chip, but not to the dimmer.
• Extension unit lines should not be laid together with
the load lines.
• Polyphase operation of the pushbutton inputs is not
permissible.