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Analog Signal Input
Verbatim Owner's Manual B-9
Note
The scanning time required by the unit to check all analog readings against
established setpoints increases with the number analog channels. With 16
channels, the time can total on the order of one second, and this imposes a
limit on how fast the unit can detect analog setpoint violations. Normally, this
will not be noticed unless you set Alarm Trip Delays of less than two seconds,
and there is no effect on the trip delay for contact channels in any case.
Refer to the following section for recording the corresponding voice messages
other than the spoken numerical values.
B.1.7 Summary of Analog Programming Codes
Code Description
Signal Type:
5 ZZ 7 N Select input signal type. 0 is default for 4-20 ma
Scaling:
5 ZZ 1 X.XX or POINT Low end signal value
5 ZZ 2 YYYY.YYYY Corresponding low end spoken value
5 ZZ 3 X.XX or POINT High end signal value
5 ZZ 4 YYYY.YYYY Corresponding high end spoken value
Setpoints :
5 ZZ 5 X.XX Low alarm limit setpoint
5 ZZ 6 X.XX High alarm limit setpoint
5 ZZ 5(6) -0 Disable low (high) setpoint
Disable Channel:
5 ZZ 0 Turn off (disable) channel ZZ
B.1.8 Recording Speech Messages for Analog Channels
This information supplements the basic information in the manual on recording
speech messages. Refer to that information before attempting to record any
speech messages.
For analog input channels
, the default message is “The present channel N
reading is ...”
For any analog inputs , in place of the default messages you may plan to record
a preamble message of the general form “The total water flow in gallons is” or
“the main tank water level in feet is.”
Use program code 1 ZZ to record the analog preamble message.