Installation 
16  UDC3500 Universal Digital Controller Product Manual  3/07 
 
Environmental and Operating Conditions 
Parameter Reference Rated Operative 
Limits 
Transportation and Storage 
Ambient Temperature 
25 ± 3 °C 
77 ± 5 °F
 
15 to 55 °C 
58 to 131 °F
 
0 to 55 °C 
32 to 131 °F
 
–40 to 66 °C 
–40 to 151 °F
 
Relative Humidity 
10 to 55*  10 to 90*  5 to 90*  5 to 95* 
Vibration 
    Frequency (Hz) 
    Acceleration (g)
 
 
0 
0 
 
0 to 70
 
0.4 
 
0 to 200 
0.6 
 
0 to 200
 
0.5 
Mechanical Shock 
    Acceleration (g) 
    Duration (ms))
 
 
0 
0 
 
1
 
30 
 
5
 
30 
 
20
 
30 
Line Voltage (Vdc) 
 24 Vdc 
 
+24 ± 1 
 
22 to 27 
 
20 to 30 
 
- - 
Line Voltage (Vac) 
  90 to 240 Vac 
 
 24 Vac 
 
120 ± 1 
240 ± 2 
24 ± 1 
 
90 to 240 
 
20 to 27 
 
90 to 264 
 
20 to 27 
 
- - 
- -  
- - 
Frequency (Hz) 
 (For Vac)
 
50 ± 0.2 
60 ± 0.2
 
49 to 51 
59 to 61 
48 to 52 
58 to 62 
- - 
- - 
*  The maximum moisture rating only applies up to 40 °C (104 °F). For higher temperatures, the RH specification is derated to 
maintain constant moisture content.