Watlow series l rev g - 02-12-08.pdf - Manual (Page 21)

Wa t l o w S e r i e s N 7
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A p p e n d i x
Appendix
A
Specifications
Controller
• Up to four sensor inputs, eight switched dc outputs, eight dc
inputs, two process outputs
• Battery backed, real-time clock
• One non-isolated slave communications channel
• One non-isolated master communications channel
• Optional ethernet communications module
• Optional high-voltage output module
Operator Interface
• Four-character, 0.56-inch, seven-segment display
• Eight-character, 0.2 inch, alphanumeric display
• Overlay interface supports up to 32 keys and LED indicator
lights
Overlay interface
• Switch closed input < 100 Ω
• Switch open input > 100 k
Ω
• LED current limiting resistor: 200
Ω
• LED supply voltage: 5V
Operating Environment
• 0 to 80°C (32 to 176°F) @ 0 to 90% RH, non-condensing
Standard Conditions For Specifications
• Ambient temperature 25°C (77°F) ±3°C, 24VÅ (ac), 50 to 60 Hz
Configured Sensor Inputs
• Update rate: 5Hz
Thermocouple
• Multiple channel applications require at least one ungrounded
thermocouple.
• Input current: 0.5 nA
• Maximum source resistance: 20 Ω
• Accuracy: ± 1.1°C (2°F)
• Drift: ± 0.10°C/°C (± 0.10°F/°F)
• Input ranges:
Type J: -46 to 316°C (-50 to 600°F)
Type K: -46 to 316°C (-50 to 600°F)
RTD
• 2- or 3-wire platinum
• DIN curve (.00385 curve)
• 700 µA maximum excitation current
• Accuracy: ± 1.1°C (2°F)
• Drift: ± 0.10°C/°C (± 0.10°F°/F)
• Range: -46 to 316°C (-50 to 600°F)
Voltage
• Input impedance 60 k
Ω
• Input range: 0 to 12V
• Accuracy: ± 25 mV
• Drift: ± 5mV/F
Current
• Input impedance 100 Ω
• Input range: 0 to 22mA
• Accuracy: ± 40 µA
• Drift: ± 5 µA/F
Event Input
• Input high: 3 to 30V or >10 k Ω
• Input low: -0.5 to 0.5V or < 250 Ω
Outputs
Switched DC Outputs
• 5V at 30mA maximum
Voltage Output
• Range: 0 to 12V at 20 mA maximum
• Minimum: load impedance 500 Ω
• Accuracy: ± 100mV
• Drift: ± 2.1mV/F
Current Output
• Range 0 to 22mA at 20V maximum
• Maximum load impedance 1,000
Ω
• Accuracy: ± 100µA
• Drift: ± 4.3µA/F
Agency
• UL 60730, c-UL File E43684
• EU LV Directive 72/23/EEC EN 60730
• EU EMC Directive 89/336/EEC
emissions
immunity
• NSF Option, File 49660-0003-000
• NAFEM Communications/Evaluate proper listing
• CSA standard E60730-2-9
Power/Line Voltage
• 24 VÅ (ac) power input (20.4 to 26.4Å (ac)), Class 2 power
source required
• 47 to 63 Hz
• 15VA maximum
• Program retention upon power failure via non-volatile memory
• Battery/real time clock option: six-year lithium battery, pro-
vides power upon backup power failure, operation resumption
after power recovery, ability to display time.
Audible Alarm
• Internal audible alarm, 85 dB @ 10cm @ 2 KHz. Output fre-
quencies supported: 250, 500, 1,000, 2,000, 4,000 Hz.
Storage Temperature
• -40 to 80°C (-40 to 176°F)
Optional High-Voltage Board
• Optional high-voltage board will have six outputs, either solid-
state relay, electromechanical relay or no-arc relay
Relay Specification:
Contact type: normally open
Maximum operating current: 8 A
Maximum operating voltage: 250VÅ (ac)
Pilot duty: 250 VA