Delta Data Systems PMAC PCI, Hardware Reference Manual

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PMAC-PCI Hardware Reference
32 Mating Connectors
Amplifier Fault Signal (FAULTn)
This input can take a signal from the amplifier so PMAC knows when the amplifier is having problems,
and can shut down action. The polarity is programmable with I-variable Ix25 (I125 for motor #1) and the
return signal is analog ground (AGND). FAULT1 is pin 49. With the default setup, this signal must
actively be pulled low for a fault condition. In this setup, if nothing is wired into this input, PMAC will
consider the motor not to be in a fault condition. The amplifier fault signal could be monitored using the
properly defined Mx23 variable.
Some amplifiers share the amplifier fault output with the amplifier enable\disable status output. In this
case, a special PLC code must be written with the following sequence: disable the amplifier fault input
(see Ix25), enable the motor (J/ command), wait for the amplifier fault input to be false (monitor Mx23),
re-enable the amplifier fault input (see Ix25).
General-Purpose Digital Inputs and Outputs (JOPTO Port)
PMAC’s J5 or JOPTO connector provides eight general-purpose digital inputs and eight general-purpose
digital outputs. Each input and each output has its own corresponding ground pin in the opposite row.
The 34-pin connector was designed for easy interface to OPTO-22 or equivalent optically isolated I/O
modules. Delta Tau’s Acc-21F is a six-foot cable for this purpose. Characteristics of the JOPTO port on
the PMAC PCI:

16 I/O points. 100 mA per channel, up to 24V

Hardware selectable between sinking and sourcing in groups of eight; default is all sinking (inputs
can be changed simply by moving a jumper; sourcing outputs must be special-ordered or field-
configured)

Eight inputs, eight outputs only; no changes. Parallel (fast) communications to PMAC CPU

Not opto-isolated; easily connected to Opto-22 (PB16) or similar modules through Acc-21F cable
Jumper E7 controls the configuration of the eight inputs. If it connects pins 1 and 2 (the default setting), the
inputs are biased to +5V for the off state, and they must be pulled low for the on state. If E7 connects pins 2
and 3, the inputs are biased to ground for the off state, and must be pulled high for the on state. In either case,
a high voltage is interpreted as a '0' by the PMAC software, and a low voltage is interpreted as a 1.
WARNING:
Having Jumpers E1 and E2 set wrong can damage the IC. The +V output on this
connector has a 2 A fuse, F1, for excessive current protection.
PMAC is shipped standard with a ULN2803A sinking (open-collector) output IC for the eight outputs.
These outputs can sink up to 100 mA and have an internal 3.3 k

pull-up resistor to go high (RP18).