Bmb01 Analogue Inputs - ASL INTERCOM iPAM400 Product Manual

Contact Closure to Supply (+ve going Input)
In this method a contact closure is not made to
ground, but to a local or remote supply, with a fused
connection to ground. This may be appropriate,
depending on the signal source.
Contact Closure to Positive Voltage Source
(+ve going Input)
As per Contact Closure to Supply, but to an
alternatively switched voltage source, such as a
suitable output from another piece of equipment.
For reliable operation in all examples it is recommended that the 0 V reference be taken back
to the 0 V of the equipment that supplies the +ve signal be it the local or a remote supply.
2.1.2.8.2

BMB01 Analogue Inputs

Analogue inputs 1 to 12 provide a contact input function via a non-isolated analogue interface with an
internal pull-up (4k7 ohms) to 5 V.
The contact input operates in two modes: 'non-monitored' and 'monitored'. Each contact is individually
selectable between these two modes.
Non-Monitored Contact
Simple contact closure.
1 Non-monitored contact is not implemented in the iPAM400 application at the time of publication of this document.
iPAM400 – Product Manual
1
U-0629-0171.doc – Issue: 04 complete, approved
12-40 V
CONTACT
CLOSURE
TO SUPPLY
12-40 V
FROM
REMOTE
EQUIPMENT
Page 14 of 138
BMB01
DIGITAL INPUT (1 TO 12)
+
I
-
WHEN CONTACT
BMB01
DIGITAL INPUT (1 TO 12)
+
I
-
WHEN CONTACT
AL 1 - 12
THRESHOLD= 2.5V
BMB01
ANALOGUE
INPUT
(1 TO 12)
0 V
CABLING TO CONTACT
OPTO ON
CLOSED
OPTO ON
CLOSED
+5 V
4k7 ohms