Watlow Series SD31 PID with Optional Countdown Timer Instrukcja Użytkownika Pobierz pdf (Strona 66)

Watlow Series SD31 ■ 64 ■ Appendix

Electromechanical Relay, Form A

• Minimum load current: 10 mA

• 2 A @ 240VÅ (ac) or 30VÎ (dc) maximum, resistive

• 125 VA pilot duty, 120/240VÅ (ac), inductive

• Must use RC suppression for inductive loads

• Electrical life 100,000 cycles at rated current

Process

• Range selectable: 0 to 20 mA, 4 to 20 mA, 0 to 5VÎ (dc), 1 to

5VÎ (dc), 0 to 10VÎ (dc)

• Reverse or direct acting

• 0 to 10VÎ (dc) voltage output into 1,000 Ω minimum load resist-

ance

• 0 to 20 mA current output into 800 Ω maximum load resistance

• Resolution:

dc ranges: 2.5 mV nominal

mA ranges: 5 µA nominal

• Calibration accuracy:

dc ranges: ±15 mV

mA ranges: ±30 µA

• Temperature stability: 100 ppm/°C

Communications

EIA/TIA-485

• Isolated

• Modbus™ RTU protocol

• 9600, 19200 and 38400 baud rates

• A maximum of 32 units can be connected (with additional 485

repeater hardware, up to 247 units may be connected)

• Sampling rate: 20 Hz

Timer Accuracy

• ± 1 second/hour

Agency Approvals

• UL Listed Process Control UL3121

(UL 61010C-1), c-UL, CE,

IP65 (NEMA 4X). File # E185611.

is a registered trademark of the Underwriter’s Laborato-

ries, Inc.

• CSA approved C22.2#24, File 158031

• NSF2 approved for type E, J, K, T, and RTD sensors. File 49660-

0002-000

Terminals

• Touch-safe

• Input power and control outputs: 0.2 to 4 mm

(22 to 12 AWG),

6 mm (0.25 in) strip length

• Sensor inputs and process outputs: 0.1 to 0.5 mm

(28 to 20

AWG), 8 mm (0.30 in) strip length

• Solid or tinned wire recommended for spring clamp style con-

nectors.

• Torque: terminal blocks 1 to 6 (SD _ _ - _ [C, K or J] _ _ - _ _ _ _)

and 1 to 4 (SD _ _ - _ F _ _ - _ _ _ _ ) are 0.8 Nm (7 in-lb).

Power

• 100 to 240VÅ (ac) +10%; -15%; 50/60 Hz, ±5%

• 24V‡ (ac/dc) +10%; -15%; 50/60 Hz, ±5%; Class 2 power source

is required for low-voltage model.

• 10VA maximum power consumption

• Data retention upon power failure via nonvolatile memory

Operating Environment

• -18 to 65°C (0 to 149°F)

• 0 to 90% RH, non-condensing

• Storage temperature: -40 to 85°C (-40 to 185°F)

Dimensions

• Height - 29.7 mm (1.17 in)

Width - 52.6 mm (2.07 in)

Behind panel - 97.8 mm (3.85 in

Functionality Matrix

Note: These specifications are subject to change without prior

notice.

Universal

Input

Control Alarm Process 485 Comm

Input 1

Output 1

Output 2

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 72

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Watlow Series SD31 PID with Optional Countdown Timer Instrukcja Użytkownika Strona 66

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