Watlow Series SD • 77 • Chapter 1 OverviewWatlow Series SD • 77 • Appendix
Appendix
A
Specifications
(2396)
Controller
• Microprocessor-based, user-selectable control modes
• Heat and cool autotune for control outputs
• 1 Universal input, 3 outputs (2 outputs on 1/32 DIN)
• Control outputs user-selectable as on-off, P, PI, PID
• Display update: 10 Hz, adjustable digital filter
• Output update: burst, 0.1 to 999.9 seconds
• Communication output isolated
• Displayed in °C, °F or process units
• Static set point model has ramp to set point capability
• Profiling (ramp and soak) model has four profiles, 10 steps per
profile. Profiles can be linked together.
Operator Interface
• Dual 4-digit LED displays
• Advance, Up Arrow, Down Arrow, Infinity (Home) tactile keys
Standard Conditions For Specifications
• Ambient temperature 25°C (77°F) ±3°C, rated line voltage, 50 to
60 Hz, 0 to 90% RH non-condensing, 15-minute warm-up
Universal Input
• Sampling rate: 6.5 Hz.
Input Accuracy Span Ranges
Type J: 32 to 1,382°F or 0 to 750°C
Type K: -328 to 2,282°F or -200 to 1,250°C
Type T: -328 to 662°F or -200 to 350°C
Type E: -328 to 1,470°F or -200 to 799°C
Type N: 32 to 2,282°F or 0 to 1,250°C
Type C (W5): 32 to 4,200°F or 0 to 2,316°C
Type D (W3): 32 to 4,200°F or 0 to 2,316°C
Type PTII (F): 32 to 2,540°F or 0 to 1,393°C
Type R: 32 to 2,642°F or 0 to 1,450°C
Type S: 32 to 2,642°F or 0 to 1,450°C
Type B: 1,598 to 3,092°F or 870 to 1,700°C
RTD: -328 to 1,472°F or -200 to 800°C
Process: -1,999 to 9,999 units
Thermocouple
• Type J, K, T, E, N, C (W5), D (W3), PTII (F), R, S, B thermocouple
types. Whole or tenth of a degree resolution.
• >20 M input impedance
• Maximum 20 source resistance
RTD
• 2- or 3-wire platinum, 100
• DIN curve (.00385 curve)
• Whole or tenth degree indication
• 390 µA nominal RTD excitation currrent
Process
• Range selectable: 0 to 10VÎ (dc), 0 to 5VÎ (dc), 1 to 5VÎ (dc), 0
to 50 mVÎ (dc) , 0 to 20 mA, 4 to 20 mA. (Can reverse low and
high values.)
• Voltage input impedance 20 k
• Current input impedance 100
• Minimum current source resistance 1 M
• Input resolution 50,000 bits (approximately) at full scale
Input Accuracy
Thermocouple Input
• Calibration accuracy: ±0.1% of input accuracy span ±1°C at
standard conditions
• Temperature stability: ±0.2 degree per degree change in ambient
for J, K, T, E, N, F
±0.3% for C and D
±0.4% for B, R (excluding 0 to 100°C) and S (excluding 0 to
100°C)
±0.5% for R and S (entire input accuracy range)
RTD Input
• Calibration accuracy ±0.1% of input accuracy span ±1°C at stan-
dard conditions
• Temperature stability: ±0.05 degree per degree change in ambi-
ent
Process Input
• Voltage input ranges
Accuracy ±10mV ±1 LSD at standard conditions
Temperature stability ±100 ppm/°C maximum
• Milliamp input ranges
Accuracy ±20µA ±1 LSD at standard conditions
Temperature stability ±100 ppm/°C maximum
Allowable Operating Ranges
Type J: 32 to 1,500°F or 0 to 816°C
Type K: -328 to 2,500°F or -200 to 1,371°C
Type T: -328 to 750°F or -200 to 399°C
Type E: -328 to 1,470°F or -200 to 799°C
Type N: 32 to 2,372°F or 0 to 1,300°C
Type C (W5): 32 to 4,200°F or 0 to 2,316°C
Type D (W3): 32 to 4,200°F or 0 to 2,316°C
Type PTII (F): 32 to 2,543°F or 0 to 1,395°C
Type R: 32 to 3,200°F or 0 to 1,760°C
Type S: 32 to 3,200°F or 0 to 1,760°C
Type B: 32 to 3,300°F or 0 to 1,816°C
RTD (DIN) -328 to 1,472°F or -200 to 800°C
Process -1,999 to 9,999 units
Output Types
• Output update rate: 6.5 Hz.
Switched DC
• Supply voltage minimum: 6VÎ (dc) @ 30 mA
• Supply voltage maximum: 12VÎ (dc) into an infinite load
Open Collector
• Maximum voltage: 42VÎ (dc)
• Maximum current: 250 mA
• Class 2 power source required
Solid-state Relay
• Optically isolated
• Zero cross switched
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