AB-6464
19
z
4
–
20 mA DC input
(Model VY513_)
Precautions
•
Power transformer is shared
If a power transformer is shared by two products,
connect the terminal
of each actuator to the
transformer with the same polarity. Connect the
terminal
in the same way.
It the terminals are connected with different polarities,
the product may break down (see Fig. 22) .
•
Control signals are shared for 4–20 mA DC
input
The 4–20 mA DC input signals of this product
are not isolated from the power.
And, the input impedance of 4–20 mA DC
signals is 100 Ω. The relations among the input
impedance of the product, the output load
resistance of the controller, and the output load
resistance and input impedance of an isolator (if
necessary) must meet the following formula.
’Applicable load resistance’ > ‘Total of input
impedance’
If two products are operated by one controller,
configure the system referring to Fig. 23 for two
individual transformers, Fig. 21 for a shared
transformer. To share a power transformer, install
an isolator to the 4–20 mA DC input terminals of
the second product. Otherwise, the product will
malfunction.
Input signals and power are shared
Model R35TC0,
Model R36TC0
ACTIVAL
4-20 mA DC input
(Model VY513_)
Isolator
⑬
⑭
＊
2
＊
3
＊
3
＊
1
1
～
＋
－
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
ACTIVAL
4-20 mA DC input
(Model VY513_)
Isolator
(mandatory)
Power
suppply
＊
2
1
～
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
*
1 Provide an isolator for the controller that is not internally
isolated.
*
2 Terminals 2, 5, and 7 are internally connected.
*
3 Refer to notes under “Power transformer is shared.”
Figuar 21
Power is shared
Model R35TC0,
Model R36TC0
ACTIVAL
4-20 mA DC input
(Model VY513_)
Isolator
⑬
⑭
＊
2
＊
1
Isolator
＊
1
1
～
＋
－
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
Model R35TC0,
Model R36TC0
ACTIVAL
4-20 mA DC input
(Model VY513_)
Power
supply
⑬
⑭
＊
2
1
～
＋
－
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
*
1 Provide an isolator for the controller that is not internally
isolated.
*
2 Terminals 2, 5, and 7 are internally connected.
Figuar 22
Input signals are shared
Model R35TC0,
Model R36TC0
ACTIVAL
4-20 mA DC input
(Model VY513_)
Isolator
⑬
⑭
＊
2
＊
1
＊
1
、
＊
3
1
～
＋
－
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
ACTIVAL
4-20 mA DC input
(Model VY513_)
Isolator
Power
supply
Power
supply
＊
2
1
～
＋
－
＋
－
＋
－
＋
－
⊥
2
3
4
5
6
7
*
1 Provide an isolator for the controller that is not internally
isolated.
*
2 Terminals 2, 5, and 7 are internally connected.
*
3 Provide an isolator if no isolator is provided to the 4–20
mA DC input of the first actuator AND the applicable load
resistance of controller is less than 200 Ω.
Figuar 23
