User's Manual

PMAC VME Hardware Reference Manual
38 PMAC Basic Specifications
Accessory 8: Terminal Block
The Acc-8 family of terminal blocks provides an easy means of connecting the lines from the control
system to PMAC’s machine connector. One Acc-8 provides all the pinouts from a single JMACH
connector on PMAC. The screw-down terminal points on the board give a quick yet reliable connection.
Acc-8P: 60-point terminal block. No connectors for option boards.
OPT-P: 60-pin connector and cable to PMAC PC, STD, and Lite.
OPT-V: 96-pin connector and cable to PMAC VME. (Note: a longer cable may be specified. Not
to exceed three feet.)
Acc-8D: 60-point terminal block with connectors for option boards.
OPT-P: 60-pin connector and cable to PMAC PC, STD, and Lite.
OPT-V: 96-pin connector and cable to PMAC VME. (Note: a longer cable may be specified. Not
to exceed three feet.)
OPT-1: Provides a third phase of output for two PMAC-commutated motors. Normally this
function is provided in the amplifier, but if the amplifier is expecting commands for all
three phases, this option generates a third phase as the negative sum of the two phases
provided by PMAC. This option is located on the main Acc-8D board.
OPT-2: Provides four voltage-to-frequency (V/F) converters for commanding stepper motor
driver systems. These convert PMAC’s analog output for each channel to a pulse output.
The pulse output can be jumpered back to PMAC’s encoder input for the motor if the
system is to be run open loop; or an actual encoder can be used for true closed-loop
servo. The maximum frequency is selectable from 10 kHz (2A) to 2MHz (2F). This
option is on a small, separate board and comes with 5 40-cm (16") cables to Acc-8D, one
16-pin and four 10-pin. Must be ordered as one of the following (2A - 2F) depending on
the frequency requirements.
OPT-2A: V-to-F converters (4); 10 kHz max.
OPT-2B: V-to-F converters (4); 50 kHz max.
OPT-2C: V-to-F converters (4); 100 kHz max.
OPT-2D: V-to-F converters (4); 500 kHz max.
OPT-2E: V-to-F converters (4); 1 MHz max.
OPT-2F: V-to-F converters (4); 2 MHz max.
OPT-2G: DIN rail mount for OPT-2.
OPT-4: Family of four low-power current-loop (transconductance) amplifier circuits for driving
hydraulic valves or very small DC motors. This option is a small, separate board with a
built-in heat sink and fan. A voltage mode provides a proportional voltage output. This
option must be ordered as either 4 or 4A. Comes with 1 40-cm (16") cable to Acc-8D.
OPT-4: Quad hydraulic valve driver; 20W/channel, 30V max, 1.0A cont, 2.0A peak.
OPT-4A: Quad motor driver; 150W/channel, 48V max, 3.0A cont, 5.0A peak.
OPT-4B: DIN rail mount for OPT-4 and 4A.
OPT-5: Provides a DIN rail mount for the Acc-8D board.
OPT-6: Provides optically isolated connection for four incremental encoders (three channels
each) on a separate board. Comes with 4 40-cm (16") cables to Acc-8D.
OPT-A: DIN rail mount for OPT-6.
OPT-7: Provides two channels of 12-bit fixed resolution resolver-to-digital conversion on a
separate board. Two additional channels can be added to this board with sub-option A.
Comes with two 10-pin 40-cm (16") cables to Acc-8D and one 26-pin 1 meter (3') cable
to PMAC.
OPT A: Provides two additional channels of resolver-to-digital conversion on the same
board as OPT-7. Comes with two 10-pin 40-cm (16") cables to Acc-8D.
OPT-B: In rail mount for OPT-7.