Environmental conditions
Operating temperature:
Storage temperature:
Relative humidity of
annual mean:
Altitude:
Indoor use statement!
Communication
Interface:
Protocol:
Transmission medium:
Transmission speed:
Connections:
Digital input (type E)
Function:
Contact supply:
External connection:
Contact open:
Contact closed:
Minimum pulse width:
Digital output (type A)
Function:
Isolation to all
other circuits:
Maximum values:
4. Assembly/disassembly
The basic unit A2xx to extend must have a fi rmware version
4.00 or higher.
Switch-off basic unit A2xx.
Simply plug-in the extension module (1) at the back of the
basic instrument (fi g. 1). Please ensure that the plug (2) and
socket (3) are aligned correctly.
Note! Do not touch the printed circuit or
contacts!
Electrostatic charge can damage electronic
components.
20
– 10 to + 55 °C
– 25 to + 70 °C
≤ 75%
2000 m max.
LON
LONTALK
®
Echelon FTT-10A transceiver,
transformer-coupled, reverse
polarity protected, twisted two-
wire cable
78 kBit/s
Pluggable screw terminals
Synchronization clock for mean-
values or switching of high/low
tariff for energy meters
internally 5 V / 2.2 kΩ
potential-free contact
Resting state, high tariff
Pulse, low tariff, LED "IN"
fl ashes
150 ms
Alarm limit monitoring
500 V AC
125 V (+ 25%), 30 mA
(4)
(2)
(3)
Fig. 1
To fi x the module mechanically, insert the four plastic clips
supplied (5) in the fi xing holes (4) (fi g. 2).
(4)
(5)
Fig. 2
Affi x the additional label: inputs and outputs/power supply
as in fi g. 3.
Fig. 3
To release the module, pull out the plastic clips by the knurled
knob (6) with the fi ngers (fi g. 4). The extension module (1) can
now be removed.
(6)
Fig. 4
(1)
(1)