Watlow F4T User Manual

Watlow F4T • 80 • Chapter 5 Function Reference
5
Chapter 5: Function Block Reference
Linearization ....................................................140
Off
.................................................................... 140
Interpolated
............................................................. 141
Stepped
................................................................ 143
Logic
..........................................................147
Off
.................................................................... 147
And
................................................................... 147
Nand
.................................................................. 148
Equal To
............................................................... 149
Not Equal To
............................................................ 150
Or
.................................................................... 151
Nor
................................................................... 152
Latch
.................................................................. 153
RS Flip Flop
............................................................. 154
Math
..........................................................155
Off
.................................................................... 156
Average
................................................................ 157
Switch Over
............................................................. 157
Process Scale
........................................................... 158
Deviation Scale
.......................................................... 160
Differential
.............................................................. 161
Ratio
.................................................................. 162
Add
................................................................... 162
Multiply
................................................................ 163
Absolute Difference
....................................................... 163
Minimum
............................................................... 164
Maximum
.............................................................. 165
Square Root
............................................................ 165
Sample and Hold
......................................................... 166
Pressure to Altitude
....................................................... 166
Dew Point
.............................................................. 167
Profile
.........................................................169
Process Value
....................................................175
Off
.................................................................... 176
Sensor Backup
.......................................................... 176
Average
................................................................ 177
Crossover
.............................................................. 177
Function Block Reference (cont.)

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