TELEDYNE API T703U - Connecting the Control Outputs; Figure 3-12: Digital Control Output Connector; Table 3-5: Control Output Pin Assignments

Getting Started Teledyne API T703/T703U Calibrator Operation Manual
32
CONNECTING THE CONTROL OUTPUTS 3.2.5.
The calibrator is equipped with 12 opto-isolated, digital control outputs. These
outputs are activated by the user-programmable, calibration sequences (see
Section 4.5.1.6 for instructions on assigning the control outputs to specific
calibration sequences)
These outputs may be used to interface with devices that accept logic-level digital
inputs, such as programmable logic controllers (PLCs), dataloggers, or digital
relays/valve drivers.
They are accessed via a 14-pin connector on the calibrator‟s rear panel (see
Figure 3-4).
CONTROL OUTPUTS
1 2 3 4 5 6 7 8 9 10 11 12 E
Figure 3-12: Digital Control Output Connector
NOTE
Most PLCs have internal provisions for limiting the current the input will draw. When connecting
to a unit that does not have this feature, external resistors must be used to limit the current
through the individual transistor outputs to ≤50mA (120 Ω for 5V supply).
The pin assignments for the control outputs are:
Table 3-5: Control Output Pin Assignments
PIN #
STATUS DEFINITION
CONDITION
1 - 12
Outputs 1 through 12 respectively
Closed if the sequence or sequence step activating output is operating
E
Emitter BUSS
The emitters of the transistors on pins 1 to 8 are bussed together.
Digital Ground
The ground level from the calibrator‟s internal DC power supplies.
07223D DCN7107