I/O-Modules
Fieldbus Terminals
2-Channel 0/4 - 20
mA Analog Input Terminal
The KL3112/KL3122 analog input terminal process signals within the range from 0 to 20 mA /
4 to 20 mA. The current is digitised with a resolution of 16 bits (default: 15 bits)and is
transported in an electrically isolated fashion to the higher-level control system. The
input channels of one bus terminal are differential inputs and possess one common earth
potential. The KL3112/KL3122 variant contains two channels in one housing. A wire breakage
and overrides are detected and the channel status is forwarded to the controller via the
K-Bus. The Error LEDs indicate overloads and wire breakages.
|
Technical data |
KL3112 | KL3122 |
|
Number of inputs |
2 | |
|
Power supply |
via the K-Bus | |
|
Signal current |
0 ... 20 mA | 4 ... 20 mA |
|
Internal resistance |
50 W typ. | |
|
Common mode voltage UCM |
35 V max. | |
|
Resolution |
15 bits, configurable 16 bits | |
| Conversion time | 140 ms, configurable to 2 ms | |
|
Measuring error (total measuring range) |
< ± 0.3% (of the upper range value) | |
| Filter | 50 Hz, configurable | |
| Surge voltage resistance | 35 V DC | |
| Electrical isolation | 500 Vrms (K-Bus / signal voltage) | |
| Current consumption from K-Bus | 60 mA typ. | |
| Bit width in the process image | I: 2 x 16 bits data, (2 x 8 bits control/status optional) | |
|
Configuration |
no address or configuration settings | |
|
Operating temperature |
0°C ... +55°C | |
|
Storage temperature |
-25°C ... +85°C | |
|
Relative humidity |
95%, no condensation | |
|
Vibrations/Shock resistance |
conforms to IEC 68-2-6 / IEC 68-2-27 | |
|
EMC resistance burst / ESD |
conforms to EN 50082 (ESD, Burst) / EN 50081 | |
|
Installation position |
any | |
|
Type of protection |
IP20 | |
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Copyright © 2000 TRS
Fieldbus Systems, Inc. All rights reserved.
Revised: July 03, 2000
.