15
Operating instructions for EE310 Humidity / Temperature Transmitter
4 Optional modules
4.1 Alarm module (option AM2)
The module offers two freely configurable relay outputs for alarm or control purposes.
Max. switch load:
250 V AC / 6 A
28 V DC / 6 A
Min. switch load:
12 V / 100 mA
No overcurrent and short circuit protection.
Both relays shall be connected to either high or low voltage.
Various operation modes are available including hysteresis, window and error indication.
NO
NC
C
NC
6
NO
4
C
5
NC
3
NO
1
C
2
NO
NC
C
Standard
Inverted
REL 1
REL 2
RELA
Y 2
RELA
Y 1
Fig. 14
Alarm module (option AM2)
When error indication mode is selected, various errors will trigger the alarm output. An alarm
output in this operation mode is used for error indication only.
Switching point
% / RH
Hysteresis
t
closed
open
closed
open
Terminal 2-3 / 5-6
Terminal 1-2 / 4-5
Fig. 15
Example hysteresis mode
Terminal 2-3 / 5-6
Terminal 1-2 / 4-5
Switching point 2
Hysteresis 2
% / RH
Hysteresis 1
Switching point 1
t
closed
open
closed
open
Fig. 16
Example window mode
