Honeywell UDC2500 Product Manual page 21

Electromechanical Relay
Controller Output
Types
SPDT contacts. Both Normally Open and Normally Closed contacts are brought out to the
rear terminals. Internally socketed.
Solid State Relay
Zero-crossing type SPST solid state contacts consisting of a triac N.O. output. Internally
socketed.
Open Collector Outputs (One or Two)
Socketed assembly replacing a relay. Opto-isolated from all other circuits except current
output and not from each other. Internally powered @ 30 Vdc.
Note: Applying an external power supply to this output will damage the instrument.
Alarm Outputs
(Optional)
Isolation (Functional) Analog Inputs: are isolated from all other circuits at 850Vdc for 2 seconds, but not from each
other.
Analog Outputs: are isolated from all other circuits at 850Vdc for 2 seconds.
AC Power: is electrically isolated from all other inputs and outputs to withstand a HIPOT
potential of 1900Vdc for 2 seconds per Annex K of EN61010-1.
Relay Contacts: with a working voltage of 115/230 Vac, are isolated from each other and all
other circuits at 345Vdc for 2 seconds.
RS422/485 Modbus
RTU
Communications
Interface (Optional)
Ethernet TCP/IP
Communications
Interface (Optional)
Infrared
Communications
(Optional)
Power Inrush Current 10A maximum for 4 ms (under operating conditions)
Weight
Environmental and Operating Conditions
Resistive Load: 5 amps @ 120 Vac or 240 Vac or 30 Vdc
ϕ
Inductive Load (cos = 0.4): 3 amps @ 130 Vac or 250 Vac
Inductive Load (L/R = 7 msec): 3.5 amps @ 30 Vdc
Motor: 1/6 H.P.
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
Maximum Sink Current: 20 mA
Short-circuit current limit: 100 mA
One or two SPDT Electromechanical relays.
Up to four setpoints are independently set as high or low alarm, two for each relay. Setpoint
can be on any Input, Process Variable, Deviation, PV Rate, Communication Shed. A single
adjustable hysteresis of 0.0 to 100.0% is provided.
Alarm Relay Contacts Rating: Resistive Load: 5 amps at 120 Vac or 240 Vac or 30 Vdc
Baud Rate: 2400, 4800, 9600,19,200 or 38,400 baud selectable
Data Format: Floating point or integer
Length of Link:
2000 ft (600 m) max. with Belden 9271 Twinax Cable and 120 ohm termination resistors
4000 ft. (1200 m) max. with Belden 8227 Twinax Cable and 100 ohm termination resistors
Link Characteristics: Two-wire, multi-drop Modbus RTU protocol, 15 drops maximum or up
to 31 drops for shorter link length.
Type: 10Base-T
Length of Link: 330 ft. (100 m) maximum
Link Characteristics: Four-wire, single drop, five hops maximum
Type: Serial Infrared (SIR)
Length of Link: 3 ft. (1 m) maximum for IrDA 1.0 compliant devices
Baud Rate: 9600,19,200 or 38,400 baud selectable
CAUTION
When applying power to more than one instrument, make sure that sufficient
power is supplied. Otherwise, the instruments may not start up normally due to voltage drop
from the inrush current.
3 lbs. (1.3 kg)
UDC2500 Universal Digital Limit ControllerProduct Manual
Installation
11