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Product Data Document
420DS-7d / D301312X012
January 29, 2009 - Page 6
Bristol
®
ControlWave ExpressPAC
Remote Automation Solutions
Website: www.EmersonProcess.com/Remote
Debounce: None•
Accumulator: 16 bit
RTD Input
Input available on 14 MHz Ultra Low Power •
CPU only
Specications are for the interface, only, not
including the RTD probe or wiring
RTD Conversion Accuracy: ± 0.1°C, or ± 0.1% •
of reading, whichever is greater
Ambient temperature effect on RTD •
measurement: ±0.01°C / °C max
Long Term Stability at Constant Conditions: •
±0.25ºC / month max
Digital Inputs
Number of points: up to 4 dedicated DI and 4 •
selectable DI (2 DI/DO, 2 DI/HSC)
Non-interrupting inputs•
Internally sourced, dry contact single ended •
inputs
Input Voltage Range: Internally sourced dry •
contact input - 3.3 Vdc
On state: >1.6 V, Off state <1.3V •
Input current :•
4 DI selectable 60 µA for low power applications
or 2 mA for in-plant noise immunity
2 DI/DO selectable 200 µA or 2.2 mA
2 DI/HSC selectable 200 µA or 2.2 mA
Input ltering: 15 ms time constant (contact •
bounce)
Power consumption: •
All 8 inputs ON: 0.005 watt
(4 inputs @ 66 µA and 4 @ 200 µA)
All 8 inputs ON: 0.075 watt
(4 inputs @ 2 mA and 4 @ 2.2 mA)
Digital Outputs
Number of points: 2 dedicated, •
2 selectable DO (2 DI/DO)
Output type: solid state open drain MOSFET•
Operating voltage range: 10 - 31Vdc•
Maximum operating frequency: 20 Hz•
Current sink capability: 400 mA at 16 V (6 V •
system), 400 mA at 30 V (12/24 V system)
Power consumption:•
Not applicable to DOs
Analog Inputs
Number points: 3 AI optional •
AI Resolution: 14 bit •
Input Conguration: Externally sourced. Single–•
ended inputs - jumper selectable 4–20 mA or
1–5 Vdc
Input Impedance: 1 megΩ - 1 5 Vdc;•
250 Ω - 4-20 mA•
Input Filtering: 12 Hz•
Channel Settling Time: 600 ms to be within •
0.01% of input signal
Input accuracy:•
0.1% of span at 25ºC•
0.2% of span -40 ºC to 70 ºC•
Power consumption: •
Not applicable
Analog Output
Number of Channels: 1 AO optional•
Output congurations: Selectable externally •
sourced 4-20 mA or 1-5 Vdc:
250 ohm with 12 V external source
650 ohm with 24 V external source