Product Data Document
420DS-6c / D301311X012
January 29, 2009 - Page 5
Bristol
®
ControlWave
®
Express
Remote Automation Solutions
Website: www.EmersonProcess.com/Remote
Ambient temperature effect on RTD •
measurement: ±0.01°C / ºC 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 25
o
C
0.2% of span -40
o
C to 70 2
o
C
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
1-5 Vdc @ 5mA max., 11 to 30 Vdc external
source
D/A resolution: 12 bit•
Accuracy: •
0.1% of span @ 25
o
C for current output; 0.1%
+ 3% of span @ 25
o
C for voltage
0.3% of span @ -40 to 70
o
C for current 0.3% +
3% of span @ -40 to 70
o
C for voltage
Power consumption – 1 output: •
Analog current output: 0.1 watt
Analog voltage output: 0.1 watt
