Specifications

Outputs
Adept MV Controller User’s Guide, Rev C 143
The input current specifications are provided for reference, voltage sources are typically
used to drive the inputs.
Note that the “off” state current range encompasses the leakage current of the outputs.
This guarantees that the inputs will not be turned on by the leakage current from the
outputs. This is useful in situations where the inputs are connected to the outputs to
monitor the state of the outputs.
13.4 Outputs
The 32 output channels are arranged in four groups of eight. Each group is electrically
opto-isolated from the other groups and from the VMEbus circuitry. The eight outputs
within each group share a common power supply and a common ground.
The outputs are accessed through the two 44-pin D-sub Output connectors on the front of
the module. Each connector provides access to two output groups. Each group requires 19
pins: 8 output signals, 1 test signal, 9 power supply (all tied together), and 1 power supply
ground reference. When an output is on, current will flow in through the power supply
pins and out of the output pins. This type of output is considered “sourcing,” that is, in
the on condition, current flows out of the output pin.
Each output channel (circuit) should be connected to only one output device.
Table 13-1. DIO Input Circuit Specifications
Operational voltage range –35 VDC≤ V
in
≤ +35 VDC
“Off” state voltage range –35 VDC ≤ V
in
≤ +3 VDC
“On” state voltage range +10 VDC ≤ V
in
≤ +35 VDC
Typical threshold voltage V
in
= +6 VDC
Operational current range 0 ≤ I
in
≤ 14 mA
“Off” state current range 0 ≤ I
in
≤ 400 µA
“On” state current range 2.3 mA ≤ I
in
≤ 14 mA
Typical threshold current I
in
= 1.1 mA
Impedance (V
in
/I
in
) 2.5 K Ω minimum
Current at V
in
= +35 VDC I
in
≤ 14 mA
Current at –35 VDC ≤ V
in
≤ 0I
in
≤–50 µA
Turn on response time (hardware)
Software scan rate/response time
30 µsec maximum
16 ms scan cycle/
32 ms max response time
Turn off response time (hardware)
Software scan rate/response time
175 µsec maximum
16 ms scan cycle/
32 ms max response time
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