Instruction Manual

Installation and Operation Handbook Technical Specification
2408 and 2404 Controller C-1
TECHNICAL SPECIFICATION
Main Process Value Input and Second DC Input
Low level range +
100mV
High level range
0 to 10Vdc or 0-20mA with external 2.49Ω current shunt. All
configurable between limits
Sample Rate 9Hz (110mS)
Resolution
<2μV for low level range, <0.2mV for high level range, with default
input filter time constant of 1.6 seconds.
Linearity Better than 0.2
o
C
Calibration accuracy The greater of 0.25% of reading or +
1
o
C or +1LSD
User calibration Low and high offsets can be applied
Input filter Off to 999.9 secs Default 1.6 seconds.
Thermocouple types Refer to the ordering code sensor input table
Cold junction
compensation
>30 to 1 rejection of ambient temperature changes in automatic
mode. Uses INSTANT ACCURACY
TM
cold junction sensing
technology to eliminate warm up drift and to respond quickly to
ambient temperature changes.
External references 0, 45, and 50
o
C
RTD/PT100 input
3-wire, Pt100 DIN43750. Bulb current 0.3mA. Up to 22Ω in each
lead without error
Potentiometer input 100 to 15Kohm
Analogue input
functions
Process value, remote setpoint, setpoint trim, external power limit,
feedforward input,, valve position feedback
Second process value
input functions
Select min, select max, derived value, transfer to 2
nd
PV
Digital inputs
Isolated except for fixed digital inputs 1 & 2
Contact closure
inputs
Open circuit voltage: 24 to 30 Vdc
Short circuit current: 24 to 29mA
Off state: < 100 ohms input resistance
On state: > 28Kohm input resistance
Logic inputs
(current sinking)
Off state: -3 to 5Vdc @ <-0.4mA
On state: 10.8 to 30Vdc @ 2.5mA
Digital input
functions
Refer to the ordering code
Digital Outputs
Relay rating Min: 12V, 100mAdc. Max:2A, 264Vac resistive
Single logic output 18Vdc, 20mA. This output is not isolated from the main process
value input
Triple logic output 12Vdc, 8mA per channel (isolated)
Digital o/p functions As per the ordering code
High current output 10Amp, 264Vac resistive. This option is not available on controller
from Jan-04
Triac rating 1A, 30 to 264Vac resistive (isolated)