Customer I/O
Connector
The CUSTOMER I/O connector (C1 in figure below) is located on the left side of the system
cabinet, beneath the inlet valves. The connector is a 15-pole IP67-proof Dsub male
connector. A female mating connector containing a screw terminal block with water
tight housing is supplied with the system.
The CUSTOMER I/O connector can be used for an external alarm, and to receive a signal
indicating that a UPS has been activated. This is described below.
The CUSTOMER I/O connector is also used for connecting the air sensors, as described
below.
Connection for alarm or UPS
Input voltage is 24 V (acceptable range 15 to28 V), and output signal is 24 V/max 1 A.
The signals are:
•
Pin 1: Remote Alarm (A in figure) digital 24 V
•
Pin 4: GND, Digital ground
•
Pin 11: UPS On (B in figure), digital input (+24 V)
•
Pin 15: +24 V Digital Supply voltage.
Pins 1 and 4 provide an output
for an alarm device (e.g., a
warning light, a buzzer, or simi-
lar device). The external alarm
will be triggered when the inter-
nal buzzer is activated.
1
4
C1
A
ÄKTA ready
+24 V
Pins 11 and 15 are used to re-
ceive an On signal (B in figure)
from an (optional) UPS during a
power failure.
15
11
C1
B
l
ÄKTA ready
+24 V
70
ÄKTA ready Operating Instructions 28960345 AD
4 Installation
4.6 Connections
