Honeywell UDC2800 Product Manual page 26

Items
Analog Input
Signal Failure
Operation
Stray Rejection
Digital Input (One)
(Optional)
Controller Output
Types
Specifications
Input Impedance:
4-20 Milliampere Input: 250 ohms
0-10 Volt Input: 200K ohms
All Others: 10 megohms
Maximum Lead Wire Resistance:
Thermocouples: 50 ohms/leg
100 ohm, 200 ohm and 500 ohm RTD: 100 ohms/leg
100 ohm Low RTD: 10 ohms/leg
Burnout Selections: Upscale, Downscale
Thermocouple Health: Good, Failing(warning), Failure
Imminent or Failed
Failsafe Output Level: Configurable 0-100% of Output range
Common Mode
AC (50 or 60 Hz): 120 dB (with maximum source impedance of
100 ohms) or ± 1 LSB (least significant bit) whichever is
greater with line voltage applied.
DC: 120 dB (with maximum source impedance of 100 ohms)
or a ±1 LSB whichever is greater with 120 Vdc applied.
DC (to 1 KHz): 80 dB (with maximum source of impedance of
100 ohms) or ±1 LSB whichever is greater with 50 Vac applied.
Normal Mode
AC (50 or 60 Hz): 60 dB (with 100 % span peak-to-peak
maximum)
+30 Vdc source for external dry contacts or isolated solid state
contacts. Digital Input is isolated from line power, earth
ground, analog input, and all outputs except for the Second
Current Output.
Electromechanical Relay
SPDT contacts. Both Normally Open and Normally Closed
contacts are brought out to the rear terminals. Internally
socketed.
Chapter 3 - Installation
26