Dynalco SWT-1000 Speed Switch/Transmitter - Manual (Page 15)

Operating Instructions SWT-1000 DYNALCO
SWT-1000.r2.0609 13
Warning:
New configurations only become active after being downloaded into the SWT-1000 via:
SWT-1000
Æ Write Parameters
7.5.1 System Parameters (Configuration Æ System)
Machine Factor
The machine factor establishes the relationship between sensor frequency and associated speed.
Machine Factor = Frequency
RPM
See section
3.2 Machine factor.
Once the correct machine factor is entered, all other settings e.g limits are made in RPM.
Minimum Measuring Time
The minimum measuring time determines the time during which the input frequency is measured.
Once this time has lapsed, the calculation is made following the end of the running signal period.
The minimum measuring time may be increased to filter out frequency jitter so as to display a
stable reading but at the cost of increased reaction time.
Minimum Displayed Value
The minimum displayed value is a measured value under which “0000” is displayed.
Alarm Definition
This function defines the alarm. It may be only system error or a logical OR combination of
system error OR sensor monitoring. During an alarm the LED is off. In addition, the relay is
deactivated and the analog output goes to 0mA irrespective of the output range.
7.5.2 Sensor Parameters (Configuration Æ Sensor)
Sensor Type
The type of sensor to be used is defined here.
is for monitoring sensors powered by SWT-1000 including 2 wire sensors
supplied via the internal pull up resistor. (Jumper J1).
is for monitoring non powered sensors e.g. 2 wire VR (passive) sensors.
See also section 8.4.1 Sensor Fault (Sensor monitoring).
Sensor Input
The sensor input “analog” (Sign) or “digital” (IQ) is defined here.
Sensor Current Minimum
As long as the sensor current consumption lies above the value , the sensor
is considered to be functioning correctly.
Sensor Current Maximum
As long as the sensor current consumption lies below the value , the sensor
is considered to be functioning correctly.