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Chapter 5 - Installation for AdeptOne Robots
46
Adept PA-4 Power Chassis User’s Guide, Rev E
5.4
sEJI Amplifier Module
The amplifiers in the AdeptOne robot system are controlled by an sEJI (Smart Enhanced
Joint Interface) distributed-control module. The sEJI module resides in the PA-4 chassis
and contains a RISC microprocessor and interface circuitry that close the servo loops for
high-performance robot motion. The sEJI is connected to a host Adept SmartController
via the SmartServo interface (based on IEEE 1394).
Figure 5-4. sEJI Module Connectors and Indicators
1. Status
panel: displays alpha-numeric codes that
indicate the operating status of the robot, including
detailed fault codes. See
Table 3-2 on page 33
for
definitions of the status codes. These codes provide
details for quickly isolating problems during
troubleshooting.
2. SmartServo
ports 1 and 2: the IEEE 1394 cable from the
SmartServo connector on the SmartController can be
installed in port 1 or 2. This connection relays
command and control signals between the sEJI and the
SmartController.
3. RS-232
connector: reserved for future use.
4. Teach Restrict
connector: used for optional CAT-3
safety installations. When used, the Teach
Restrict-to-B+ Amp cable is installed on this connector.
5. EXPIO (EXPansion I/O)
connector: this is the interface
to external IO devices, such as the IO Blox.
6. Amplifier Signal
connector: install the large single
plug of the sEJI-to-Amp interface cable on this
connector to connect the amps to the sEJI servo
module.
7. XSLV
connector
:
interfaces to the XSYS connector on a
SmartController. The connection provides an interface
to connect the E-Stop safety functionality of the amps,
PA-4, and sEJI to the Adept SmartController robot
safety system. Must be connected to allow all powered
robot operations.
8. Arm Signal
connector: install the large arm signal
cable on this connector to bring the robot encoder
signals into the sEJI servo system.
9. Security Panel
connector: used for optional CAT-3
safety installations.
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