Watlow F4T User Manual

Watlow F4T • 157 • Chapter 5 Function Reference
Average
This function calculates the mean average of up to four inputs. Only inputs connected to a
source are used in the calculation. A filter and offset may be applied to the calculated value.
The output has the units of the signal connected to the top input link.
Signals
Direction
Label Type Function
Receivers
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
Transmitter - - - - Analog The filtered average of the inputs plus the offset
Function
To average the inputs, set Function to Average.
Offset
Adjustment added to the result of the calculation.
Range: -99,999.000 to 99,999
Filter
Set the amount of filtering to apply. Filtering smooths signal fluctuations. Increase the time to
increase filtering. Excessive filtering slows the function’s response.
Range: 0.0 to 60.0 seconds
Switch Over
When SW is off, the output equals input 1. When SW is on, the output equals input 2. A filter
and offset may be applied to the output. The output has the same units as the selected in-
put.
Signals
Direction
Label Type Function
Receivers
1 Analog Selected as the output when SW is off
2 Analog Selected as the output when SW is on
SW Digital Off selects input 1, on selects input 2
Transmitter - - - - Analog The filtered value of the selected input plus the offset
Function
To select one of two analog inputs with a digital input, set Function to Switch Over.
Offset
Adjustment added to the selected value.
Range: -99,999.000 to 99,999

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