West Control Solutions KS 816 - Manual (Page 15)

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Multiple transmitter and temperature controller KS 816
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6 Outputs
KS 816 has no outputs in the conventional sense. These are output via the (field)
bus as
• correcting variable in %, for continuous controllers and
• digital information (on/off) for switching controllers
Control of the final elements (relays,contactors, solid-state relays, magnetic valves)
must be provided by a suitable output card of the control system.
6.1 Operation as a transmitter
Each KS 816 channel can be configured as a transmitter. This can be done only via
software, by means of the engineering tool, or via the bus by means of the control
system. The controller function is switched off and only the (corrected) process va-
lue is transmitted via the bus. The 4 limit values for each channel can be activated
also in the transmitter function. Conversion into (0...10V; 0/4...20mA) standard si-
gnal must be provided in the control system.
When using as a transmitter, the following information must be taken into account:
As the KS 816 scanning interval is approx. 1 s, the measurement values are also
updated only at intervals of one second.
KS 816 is not suitable for applications in which the measured value must be upda-
ted continuously, e.g. pressure measurement with peak value detection.
6.2 Alarm function
The alarms are also output via the (field) bus:
Process value alarm (absolute process value monitoring)
Control deviation (process value - set-point)
Correcting variable
Set-point
Limit values
4 limit values can be adjusted for each of the 16 channels: 2 low alarms and
2 high alarms
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