West Control Solutions KS 816 - Manual (Page 13)

9499 040 55811
Multiple transmitter and temperature controller KS 816
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5.2 Direct voltage
5.2.1 Range :-100mV...+100mV IN1T+...IN16T+
Direct voltages up to 100 mV can be connected instead of the thermocouples.
These values can be scaled via corresponding software settings.
The input resistance is approx. 100 kOhm.
5.2.2 Range : -10V...+10V IN1U+...IN16U+
Inputs INxU+ are provided for direct voltages within -10V and +10V.
These values can be scaled via corresponding software settings.
The input resistance is approx. 100kOhm.
5.3 Resistance thermometer (IN1+/IN1-/IPT1 ... IN16+/IN16-/IPT16)
Pt 100, 2 or 3-wire connection
Type PT 100 resistance thermometers acc. to DIN/IEC 751 can be connected in 2
or 3 wire circuit.
The max. measuring range is -100,0 ... 850,0°C, temperature-linear.
3-wire connection is possible without lead resistance adjustment, provided that the
cross-section of individual wires is equal.
With 2-wire connection, a calibrating resistor corresponding to the lead resistance
must be included. (If possible, 2-wire connection should not be used.)
The sensor is monitored for short circuit or break.
The action (upscale/downscale) is configurable.
5.4 0/4...20mA standard current signal (INI1+...INI16-)
For 0/4...20mA standard current signal. The values can be scaled via correspon-
ding software settings.
The input resistance is 5 Ohm, i.e. the voltage requirement is 100 mV.
When operating KS 816 with current inputs, interlock diodes at the terminals must
be provided so that the current is not cut off when removing the terminals.
5.5 Screening of input leads
With long leads and/or considerable interference, we recommend using screened
connecting leads. The two methods for connecting the screening are:
1. Each input is provided with a grounded connection to which the screening of the
incoming cable must be connected. These interconnected screenings must be con-
nected with ground potential (protective earth) via one of the ground terminals by
means of a short cable (approx. 20 cm).
2. Use of a commercially available connecting system.
5.6