Cover Tamper Contact; Wall Reader - ABB L240 Series Installation, Commissioning & Operation

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12.2.5 Cover tamper contact

12.2.6 Wall reader

L240/BS
When connecting a SafeKey Wall Reader with keypad (WELT/...), the cover
tamper contact (pink and grey wires) must be connected to the tampering
circuit "Sabo", and the evaluation of the tampering circuit must be activated.
Using function switch 2-1, you can set whether an end of line resistor is
present in the wall reader or whether an existing end of line resistor is
looped into the evaluation module (2.7 kOhm).
Wall Reader
WELT
gray
pink
7
8
Sabo
Function switch 2-1 OFF
If a SafeKey Wall Reader with keypad (WELT/...) is not connected, the
evaluation of the tampering circuit should be deactivated
Wall Readers WEL/A and WELT/A are connected to terminals "+DPM" in a
4-wire configuration. The connection cable must remain permanently
connected and may not be connected via tappet contacts or junction
contacts.
Function switch 1-2 must be positioned at OFF.
yellow
green
brown
white
11 12 13 14
+
D P
M
Wall Reader
WELT
gray
pink
7
8
Sabo
Function switch 2-1 ON
82

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