Watlow F4T Install & Troubleshooting
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43
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Chapter 6 Appendix
Number of Function Blocks by Ordering Option
Function Block
Basic
Set 1
Set 2
Alarm
6
8
14
Compare
None
4
16
Counter
None
4
16
Linearization
4
4
8
Logic
None
12
24
Math
None
12
24
Process Value
4
4
8
Special Output
Function
None
2
4
Timer
None
6
16
Variable
4
12
24
Real Time Clock with Battery Backup
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Accuracy (typical): +/-3ppm over -15 to 50°C
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Typical battery life: 10 years at 77°F (25°C)
• Field replaceable lithium battery
Compare
• Greater than, less than, equal, not equal, greater than or equal, less than or equal
Counters
• Counts up or down, loads predetermined value on load signal
Linearization
• Interpolated or stepped
Logic
•
And, nand, or, nor, equal, not equal, latch, flip-flop
Math
• Average, process scale, switch over, deviation scale, differential (subtract), ratio
(divide), add, multiply, absolute difference, minimum, maximum, square root,
sample and hold, pressure-to-altitude and dew point
Process Value
• Sensor backup, average, crossover, wet bulb-dry bulb, switch over, differential
(subtract), ratio (divide), add, multiply, absolute difference, minimum, maximum, square
root, altitude, Vaisala
®
relative humidity and pressure-to-altitude
Special Output Function
• Compressor control (cool and/or dehumidify with single compressor), motorized valve,
sequencer
Timers
• On pulse, delay, one shot or retentive
Variable
• User value for digital or analog variable
Anderson-Bolds ~ 216-360-9800
www.anderson-bolds.com
