21 specifications, Specifications, Watlow microdin quick start guide – Watlow MICRODIN User Manual
Page 21: Control mode, Operator interface, Sensor input, Output #1: user selectable, Output #2: user selectable
21
Watlow MicroDIN Quick Start Guide
Specifications:
(2346)
Control Mode
• Microprocessor-based, user selectable control modes
• Single input, single output
• Heat or cool auto-tuning
Output #1: User selectable
• ON/OFF; P, PI, PD, PID heat or cool action adjustable switching differential:
1 to 9999 or 0.1 to 999.9°F or °C
• Proportional band: 0 to 9999, or 0.0 to 999.9°F or °C
• Integral: 0.00 to 99.99 minutes per repeat
• Reset: 0.00 to 99.99 repeats per minute
• Derivative/Rate: 0.00 to 9.99 minutes
• Cycle Time: 0.1 to 60.0 seconds
Output #2: User selectable
• Process or deviation alarm with flashing alarm status indicator
• Alarm with separate high and low set points
• Hysteresis: 1 to 9999° switching differential
Operator Interface
• EIA-485 serial communications with Modbus
™
RTU protocol
• 9600, 19200 user selectable baud rates
• 1 to 63 user selectable address range
Sensor Input
• Sensor input sampling rate: 10 samples/second, 10Hz
• Thermocouple, grounded or ungrounded sensors
• RTD 2 or 3 wire, platinum, 100
Ω
@ 0°C calibration to JIS curve (0.003916
Ω
/
Ω
/°C), or
DIN curve (0.00385
Ω
/
Ω
/°C)
• Sensor break protection de-energizes control output to protect system or selectable
bumpless transfer to manual operation.
• °F or °C, user selectable
• Sensor Ranges:
Accuracy Ranges:
Operating Ranges
B t/c
1598 to 3092°F
870
to 1700°C
32 to 3300°F
0
to 1816°C
C (W5) t/c
32 to 4200°F
0
to 2315°C
32 to 4200°F
0
to 2315°C
D (W3) t/c
32 to 4200°F
0
to 2315°C
32 to 4200°F
0
to 2315°C
E t/c
-328 to 1472°F
-200
to
800°C
-328 to 1470°F
-200
to
800°C
J t/c
32 to 1382°F
0
to
750°C
32 to 1500°F
0
to
815°C
K t/c
-328 to 2282°F
-200
to 1250°C
-328° to 2500°F
-200
to 1370°C
N t/c
32 to 2282°F
0
to 1250°C
32 to 2372°F
0
to 1300°C
PT2 t/c
32 to 2540°F
0
to 1393°C
32 to 2543°F
0
to 1395°C
R t/c
32 to 2642°F
0
to 1450°C
32 to 3200°F
0
to 1760°C
S t/c
32 to 2642°F
0
to 1450°C
32 to 3200°F
0
to 1760°C
T t/c
-328 to
662°F
-200
to
350°C
-328 to
750°F
-200
to
400°C
1.0 RTD (DIN)
-328 to 1202°F
-200
to
650°C
-328 to 1472°F
-200
to
800°C
0.1 RTD (JIS) -199.9 to 999.9°F
-143
to
636°C
-328 to 1166°F
-200
to
630°C
• Tenth degree resolution selectable over sensor operating range within limits of
-199.9 to 999.9, except for thermocouple types B, R, and S