Watlow F4T User Manual

Watlow F4T • 79 • Chapter 5 Function Reference
5
Chapter 5: Function Block Reference
F4T Functions Described .............................................82
Alarm
..........................................................83
Off
.................................................................... 84
Process Alarm
............................................................ 84
Deviation Alarm
........................................................... 86
Analog Outputs
....................................................90
Cascade
.........................................................92
Process
................................................................. 92
Deviation
................................................................ 93
Compare
.......................................................107
Off
.................................................................... 108
Greater Than
............................................................ 108
Less Than
.............................................................. 108
Equal To
............................................................... 109
Not Equal To
............................................................ 110
Greater or Equal
......................................................... 110
Less or Equal
........................................................... 111
Control Loop
.....................................................112
Counter
........................................................125
UP
.................................................................... 125
Down
.................................................................. 126
Current Input
....................................................128
Digital Input
.....................................................130
Input Dry Contact
........................................................ 131
Input Voltage
............................................................ 131
Digital Inputs/Outputs (I/O)
...........................................131
Input Dry Contact
........................................................ 132
Output
................................................................. 132
Input Voltage
............................................................ 134
Digital Outputs
...................................................134
Solid-State Relay - Switched DC/Open Collector
................................. 134
Electromechanical and NO-ARC Relays
........................................ 136
Key
...........................................................137
Momentary
............................................................. 137
Toggle
................................................................. 137
On Pulse
............................................................... 138
Limit
.........................................................138
Limit Output
.....................................................140

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