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8 UDC 3300 Controller Product Manual 4/00
Pre-installation
information
If the controller has not been removed from its shipping carton, inspect
the carton for damage and remove the controller. Inspect the unit for any
obvious shipping damage and report any damage due to transit to the
carrier.
Make sure that the carton with the controller includes
• a bag containing mounting hardware and
• a bag containing input resistors.
Check that the model number shown on the inside of the case agrees with
what you have ordered.
CE conformity special
conditions (Europe)
Shielded twisted pair cables are required for all Analog I/O, Process
Variable, RTD, Thermocouple, dc millivolt, low level signal, 4-20 mA,
Digital I/O, and computer interface circuits. Refer to the Severe Electrical
Noise Environments document (51-52-05-01) for additional information.
Specifications
We recommend that you review the specifications and adhere to the
operating limits listed in Table 2-1 when you install your controller.
Table 2-1 Specifications
Design
Input Accuracy
± 0.20 % of span typical (± 1 digit for display)
Field calibratable to ± 0.05 % of span typical
15 bit resolution typical
Sampling Rate
Inputs sampled six times a second
Temperature Stability
± 0.01 % of Full Scale/°C change typical
Input Signal Failure
Protection
Thermocouple Inputs: Upscale or downscale burnout
Burnout Current: 0.13 microamps
Failsafe Output Level: Configurable 0-100 %
Input Impedance
4-20 Milliampere Input: 250 ohms
0-10 Volt Input: 200K ohms
All Other: 10 megohms
Maximum Lead Wire
Resistance
Thermocouples: 100 ohms/leg
100, 200, and 500 RTD: 100 ohms/leg
100 ohm Low RTD: 10 ohms/leg
Stray Rejection 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)