Watlow F4T User Manual

Watlow F4T • 214 • Chapter 5 Function Reference
Units
Set the units for the function’s output.
Options:
• Power: the output is a percentage with 100% representing full power and 0% represent-
ing no power.
• Process: the output is in units of measure other than degrees Fahrenheit, degrees Cel-
sius or relative humidity.
• Relative Humidity: the output is a measurement of percent relative humidity (%RH).
• Absolute Temperature: the output is a temperature on the Celsius or Fahrenheit scale.
Scale Low
Set the electrical signal level at which the Range Low setting is the desired indicated process
value. Scale Low and Range Low are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block. Consult the hard-
ware specifications for the signal range supported by the specific hardware.
Use to set the minimum value of the process range in electrical units.
Range: -100.0 to 1000.0 VDC
-100.0 to 1000.0 mVDC
Scale High
Set the electrical signal level at which the Range High setting is the desired indicated process
value. Scale High and Range High are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block. Consult the hard-
ware specifications for the signal range supported by the specific hardware.
Use to set maximum value of the process range in electrical units.
Range: -100.0 to 1000.0 VDC
-100.0 to 1000.0 mVDC
Range Low
Set the process value to be indicated when the electrical signal is equal to the Scale Low
setting. Scale Low and Range Low are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the minimum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Range High
Set the process value to be indicated when the electrical signal is equal to the Scale High set-
ting. Scale High and Range High are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the maximum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C

Watlow F4T Specifications

General

Inputs	Thermocouple, RTD, mA, V
Outputs	Relay, SSR, mA, V
Communication	Ethernet, Modbus RTU
Data Logging	Yes
Certifications	CE, UL, cUL, RoHS
Control Modes	PID, On/Off
Power Supply	100 to 240 VAC
Operating Temperature	0 to 50°C
Enclosure Rating	IP65
Display	4.3 in. (109 mm) color touch panel LCD
Control Loops	Up to 4