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Chapter 2 - Installation
2.15 Grounding Information
Adept MV Controller Grounding
The detachable three-wire power cord is used for connection to the power source and the
protective ground. The protective ground conductor (colored green/yellow) in the power
cord is internally connected to the exposed metal parts of the Adept MV Controller. To
ensure electrical-shock protection, the protective ground conductor must be connected to
a properly grounded power source.
Adept PA-4 Power Chassis Grounding
The protective ground conductor (colored green/yellow) of the Adept PA-4 Power
Chassis is internally connected to the accessible metal parts of the power chassis. To
ensure electrical-shock protection, this must be connected to a properly grounded power
source, via the Security Panel.
WARNING: Ensure that a proper protective ground connection exists
before turning on the power. The Adept PA-4 power chassis and the
Adept MV controller must be connected to the same earth ground.
Adept Robot Grounding
The major parts of the robot are connected to the ground point on the base of the robot, see
Figure 2-11. (See the next section for parts of the robot that are not grounded.) The user
must install a ground wire at this point to ground the robot.
Robot-Mounted Equipment Grounding
The following parts of an Adept 550 robot are not grounded to protective earth: the Joint 3
quill, the user flange, and all access covers. If hazardous voltages are present at any
user-supplied robot-mounted equipment or tooling, you must install a ground connection
from that equipment/tooling to the ground point on the robot base (see Figure 2-11).
Hazardous voltages can be considered anything in excess of 30VAC (42.4VAC peak) or
60VDC.
WARNING: Failing to ground robot-mounted equipment or tooling that
uses hazardous voltages could lead to injury or death of a person
touching the end-effector when an electrical fault condition exists.
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Adept 550 Robot Instruction Handbook, Rev A
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