Installation 
3/07  UDC3500 Universal Digital Controller Product Manual  13 
Pre-installation Information 
If the controller has not been removed from its shipping carton, inspect the carton for 
damage then remove the controller. 
•  Inspect the unit for any obvious shipping damage and report any damage due to 
transit to the carrier. 
•  Make sure a bag containing mounting hardware is included in the carton with the 
controller. 
•  Check that the model number shown on the inside of the case agrees with what you 
have ordered. 
2.2 Condensed Specifications 
Honeywell recommends that you review and adhere to the operating limits listed in Table 
2-1 when you install your controller. 
Table 2-1  Condensed Specifications 
Specifications 
Analog Inputs 
Up to three Universal analog inputs. These can easily be configured to operate as 2 
Universal and 2 High Level or as 1 Universal and 4 High Level inputs. 
Accuracy: 
± 0.10% of full scale typical (± 1 digit for display) 
Can be field calibrated to ± 0.05% of full scale typical 
16-bit resolution typical 
Sampling Rate: All inputs are sampled six times per second 
Temperature Stability: ± 0.0075% of Full Scale span / ˚C change—typical 
Input Impedance:  
0-20 and 4-20 Milliampere Inputs: 250 ohms 
0-10 Volt and –1 to +1 Volt Input: 200K ohms 
All Others: 10 megohms 
Maximum Lead Wire Resistance: 
Thermocouples: 50 ohms/leg 
100 ohm, 200 ohm, 500 ohm and 1000 ohm RTD: 100 ohms/leg 
100 ohm Low RTD: 10 ohms/leg 
Slidewire Input for Position Proportional Control (Input 3 only): 
100 ohm to 1000 ohm resistive slidewire types 
Herculine
©
 Models 10260 and 11280 Slidewire Emulation 
Analog Input Signal 
Failure Operation 
Burnout Selections: Upscale, Downscale, Failsafe or None 
Thermocouple Health: Good, Failing, Failure Imminent or Failed 
Failsafe Output Level: Configurable 0-100% of Output range 
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) 
Digital Inputs (Four) 
(Optional) 
+30 Vdc source for external dry contacts or isolated solid-state contacts. Digital Inputs are 
isolated from line power, earth ground, analog inputs and all outputs.