BUILD-IN TOUCH TERMINAL
ETT 2144
12.02.2020
Page 13
4.2
Electrical Requirements
Supply voltage
+18-30 V DC (SELV/PELV), ty24 V DC
UL: Class 2 or LVLC
(1)
Current consumption of (+24 V)
power supply
typically 1500 mA
(without externally connected de-
vices)
maximum 2000 mA
(with external devices connected)
Inrush current with 24 V/10 A
fixed voltage supply
maximum 2.2 A (for 1.8 ms, load-dependent)
Inrush current without current-
limiting supply
maximum 3.5 A (for 6 µs, load-dependent)
(1)
For USA and Canada:
The supply must be limited to:
a) max. 5 A at voltages from 0-20 V DC, or
b) 100 W at voltages from 20-60 V DC.
The limiting component (e.g. transformer, power supply or fuse) must be certified by an
NRTL (Nationally Recognized Testing Laboratory).
