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4/00 UDC 3300 Controller Product Manual 9
Design (continued)
Isolation (Functional)
AC Power: Is electrically isolated from all other inputs and outputs to withstand a HIPOT
potential of 1900 Vdc for 2 seconds per Annex K of EN61010-1.
Analog Inputs and Outputs: Are isolated from each other and all other circuits at 850 Vdc
for 2 seconds.
Digital Input and Digital Output: Are isolated from all other circuits at 850 Vdc for 2
seconds.
Relay Contacts: With a working of 115/230 Vac, isolated from each other and all other
circuits at 345 Vdc for 2 seconds.
Alarm Outputs
One SPDT electromechanical relay.
A second alarm is available using the second control relay. This is not available with Relay
Duplex, Position Proportional, or Three Position Step control.
Alarm Relay Contacts Rating
Resistive Load: 5 ampere at 120 Vac or 30 Vdc, 2.5 A at 240 Vac.
Controller Output
Types
Current Output (Isolated)
Range can be set anywhere between 0 to 21 mA, and as direct or reverse action.
Resolution: 11 bits for 0 to 21 mA
Accuracy: 0.5 % full scale
Temperature Stability: 0.1 % F.S./°C
Load Resistance: 0 to 1000 ohms
Electromechanical Relays (One or Two)
SPDT contacts. Both Normally Open and Normally Closed contacts are brought out to the
rear terminals.
Internally socketed
Resistive Load: 5 amps @ 120 Vac or 30 Vdc, 2.5A at 240 Vac
Inductive Load: 50 VA @ 120 Vac or 240 Vac
Motor: 1/6 H.P.
Solid State Relays (One or Two)
SPST solid state contacts consisting of a triac N.O. output.
Internally socketed
Resistive Load: 1.0 amp @ 25 °C and 120 or 240 Vac
0.5 amp @ 55 °C and 120 or 240 Vac
Inductive Load: 50 VA @ 120 Vac or 240 Vac
Minimum Load: 20 milliamps
Open Collector Outputs (One or Two)
Maximum Sink Current: 20 mA
Overload Protection: 100 mA
Internally powered @ 30 Vdc
Opto-isolated from all other circuits except current output, but not from each other.
Socketed jumper assembly replaces relay.
Solid State Relays (10 amps)
One or two externally mounted SPST triac N.O. outputs for use with open collector outputs.
Resistive Load: 15 amps @ 25 °C and 120 or 240 Vac
10 amps @ 55 °C and 120 or 240 Vac
Inductive Load: 50 VA @ 120 Vac or 240 Vac
Motor Rating: 1 HP @ 25 °C
0.75 HP @ 55 °C
Controller Output
Algorithms
See Section 4.7.