KBF-LQC (E5.2) 12/2010
page 79/106
17.4 Analog outputs for temperature and humidity (option)
With this option the chamber is equipped with analog outputs 4-20 mA for temperature and humidity.
These outputs allow transmitting data to external data registration systems or devices.
The connection is realized as a DIN socket (6) in the right lateral control panel as follows:
ANALOG OUTPUT 4-20 mA DC
PIN 1: Temperature –
PIN 2: Tempe
PIN 3: Humidity –
PIN 4: Hu
Humidity range: 0 % r.H. to 100 % r.H.
Temperature range: -10 °C /
14°F
to +100 °C /
212°F
A suitable DIN plug is enclosed.
Figure 31: Pin allocation of DIN socket (6) for option analog outputs
17.5 Zero-voltage relay alarm outputs for temperature and humidity for alarm
transmission (option)
Equipment of the chamber with zero-voltage relay outputs for temperature and hu-
midity (option) permits the transmission of alarms to a central monitoring system.
Connection is established via a DIN socket.
Figure 32: Pin configuration of the DIN socket
Temperature contact
Humidity contact
Pin 1: Pin
Pin 2: Make
Pin 3: Pin
Pin 4: Make
In case of a temperature alarm, pins 1 and 2 are open; with humidity alarm, pins 3 and 4 are open. This
happens simultaneously to the alarm message displayed at the controller display.
In case of power failure, both contacts are open.
Maximum loading capacity of the switching contacts: 24V AC/DC - 2,5A
DANGER
Electrical hazard.
Danger of death.
Damage to switching contacts and connection socket.
∅
Do NOT exceed the maximum switching load of 24V AC/DC – 2.5A.
∅
Do NOT connect any devices with a higher loading capacity.
In case of temperature and humidity alarm, the alarm message on the controller display remains dis-
played during transmission of an alarm via the zero-voltage relay outputs.
As soon as the cause of the alarm is rectified, you can reset the alarm transmission via the zero-voltage
relay outputs together with the alarm message at the controller display hitting the RESET key.
1
2
3
4
