Connecting The Power Supply; Installing An External Leakage Breaker - Yamaha DRCX User Manual

2-2 Connecting the Power Supply

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2-2-2 Connecting the power supply
Connect the power supply to the power supply terminal block. Refer to the printed marks on the
panel, and correctly connect to the connection terminals. Incorrect connections can lead to major
hazards such as fire, etc. Treat the end of the wires so that the wires do not disconnect from the
terminal block. The methods of connecting T1 and T2 differ according to the input power voltage as
shown below. Please note that the model DRCX-1020, DRCX-2010 and DRCX-2020 are specifi-
cally designed to operate on 200 to 230V.
Fig. 2-1 Power supply connections
L 1. L (AC IN)
N 2. N (AC IN)
3.
NC
Do not connect.
NC
T1
4. Short T1 and T2
T2
when input voltage
is AC100 to 115V.
0.75 mm
(equivalent to AWG18)
AC 100V-115V
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CAUTION
The DRCX series controller does not have a power switch. Be sure to provide a power supply breaker (insula-
tion) of the correct specifications that will turn the power on or off to the entire system including the robot
controller.
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WARNING
Before beginning the wiring work, make sure that the power supply for the entire system is
turned off. Doing the wiring work while power is still turned on may cause electrical shocks.

2-2-3 Installing an external leakage breaker

Since the robot controller drives the motors by PWM control, leakage current flows at high frequen-
cies. This might cause the external leakage breaker to malfunction.
When installing an external leakage current breaker, it is important to choose the optimum sensitivity
current rating (IΔn). (Check the leakage breaker manufacturer's data sheets to select the optimum
product compatible with inverters.)
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CAUTION
1. Leak current was measured with a leak tester with a low-pass filter turned on (100Hz).
Leak tester: Hioki Electric 3283
2. When using two or more controllers, sum the leakage current of each controller.
3. Make sure that the controller is securely grounded.
4. Stray capacitance between the cable and FG may vary depending on the cable installation condition, causing
the leakage current to fluctuate.
L
N
(Ground)
NC
NC
T1
T2
2
or more
Leakage current
DRCX 4mA (Max.)
1. L (AC IN)
2. N (AC IN)
3. (Ground)
Do not connect.
4. Leave T1 and T2 open
when input voltage is
AC200 to 230V.
AC 200V-230V