Mts Model FlexTest SE Manual do Utilizador descarregar pdf (Página 143)

Digital I/O Connections

Models FlexTest® IIm/GT/SE Controller Hardware FlexTest GT Controller Connections

143

Digital outputs Connector J4 Out provides sixteen general purpose digital outputs that can send

digital logic signals to external switches or logic devices.

• Minimum output current drive is 6 mA. Maximum output current drive is 20

mA.

Note The maximum output current can vary from unit to unit. The minimum

guaranteed output current is 6 mA and the maximum output current is 20

mA. You can connect the digital outputs in parallel to increase the current

drive. When connected in parallel, the station must be configured so that

all paralleled outputs are driven from the same event.

• The output is rated for a maximum of 30 V DC.

• Fused 12 V DC is available at pins 18 and 19.

Install a current-limiting resistor that is appropriate for the external device.

• If an output is not used, a jumper is not needed to complete a circuit.

• The outputs are optically isolated.

• The outputs are triggered by the system controller.

Cable specification The cabling information shown assumes a single cable destination (with an

overall shield). In other applications, the cable may have more than one

destination. For these applications an overall shield is not practical and non-EMI

connectors and back shells are permissible.

• 37-contact type D male EMI connector

• Back shell–EMI metallized plastic

• Cable–shielded twisted pairs as required (24 AWG minimum) with drain

wire(s) connected to the metallized backshell at the chassis.

Ext Voltage

+CH2

-CH2

External Device

Digital I/O

Access Panel

+12

Opto-

Coupler

493.72 Digital I/O

Transition Board

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Mts Model FlexTest SE Manual do Utilizador Página 143