2-
5
2
INST
ALLA
TION AND CONNECTION
2-2 Connecting the Power Supply
2-2-5 Installing current control switches
When controlling the power on/off of the robot controller from an external device such as a PLC, a
current control switch (contactor, breaker, etc.) may be used. In this case, the current control switch
usually creates a large on/off inrush current. To minimize this on/off inrush current, surge killers
must be installed for surge absorption. Connect a surge killer in parallel with and close to each
contact of the current control switch.
Recommended surge killer:
Okaya Electric XE1201, XE1202, RE1202
Example:
: Surge killer
Controller
: Contactor
L
N
AC IN
2-2-6 Insulation resistance and voltage breakdown tests
Never attempt insulation resistance tests or voltage breakdown tests on the SRCP controller. Since
capacitive grounding is provided between the controller body and 0V, these tests may mistakenly
detect excess leakage current or damage the internal circuitry. If these tests are required, please
consult your YAMAHA sales office or representative.
2-3
Grounding
The SRCP controller must be grounded to prevent danger to personnel from electrical shocks in case
of electrical leakage and prevent equipment malfunctions due to electrical noise.
We strongly recommend that Class D (grounding resistance of 100 ohms or less) or higher grounding
be provided. For grounding the controller, use the ground terminal on the power supply terminal
block.
* Class D grounding is the same as Class 3 grounding previously used.
2-4
Connecting the SRCP to the Control Unit
The SRCP controller can be operated either through the TPB programming box or through a PC
(personal computer) equipped with an RS-232C terminal.
When using the TPB, plug the TPB cable connector into the TPB connector of the SRCP controller.
(Refer to "4-1-1 Connecting the TPB to the SRCP controller".)
When using a PC, plug the RS-232C interface cable connector (25 pins) into the TPB connector of
the SRCP controller. (Refer to "11-2 Communication Cable Specifications".)
To prevent equipment malfunction due to noise, we strongly recommend that Class D (grounding
resistance of 100 ohms or less) or higher grounding be provided.
Содержание SRCP
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