Teledyne 2002 instruction manual Relay Interface Option Board, Relay Board Specifications

7. Relay Interface Option Board

The relay interface board is available as an option for the Model 2002. Additionally, relays may be added to either the Digital option Board (RS-232 or RS-485) or to the Analog option Board (0-10 Volts or 4-20mA). In either case the relays operate independently of the other options. The relay board allows the TTL logic setpoints (High, Low) to directly control two SPDT relays. Whenever the setpoint indicator light in the front panel is lit, the corresponding relay is energized. The relay contacts are rated for a maximum switching current of 250VA (resistive load). Connection to the relay contacts is made via connector mounted through the rear panel of the Model 2002. Screw terminals, on the mating connector, are designed for wire from 28 AWG through 14 AWG.

7.1.Relay Board Specifications

Each relay board consists of 2 Form C (SPDT) relays with the contacts wired in parallel.

Max. Switching power	120W, 250VA
(2A @ 125VAC, 1A @ 250VAC)
Max. Switching voltage	220VDC, 250VAC
Max. Switching current	4A DC, AC
Max. Carrying current	6A DC, AC
UL/CSA rating	1.2A @ 125VAC
...................................................................................................................................................	1.2A @ 110VDC
.....................................................................................................................................................	4.0A @ 30VDC

7.2.Relay Connector Pin Assignment

Model 2002 Vacuum Gauge Page 27 of 37