18
(2) Description of calculation formulas 2) and 3)
(a) Vm: Supply voltage to bridge module
Voltage: 24VDC -10 to +15% (21.6 to 27.6VDC), Ripple 0.5Vp-p or less
Recommended voltage: 26.4V
(b)
V(V): Voltage drop between lines
V(V) = Transmission cable supply current I (A)
Line resistance R (
)
Line resistance R(
) = Line length (m)
Conductor resistance (
/m)
2
• Line diameter 1.25
Conductor resistance 0.015
/m
• Line diameter 0.75
Conductor resistance 0.025
/m
(3) Calculation example
The example shows how to check whether the total length of 50m is sufficient for configuring the system with the
following conditions.
(a) Condition
(b) Calculation result
Based on the above calculation results of calculation formulas 1) through 3), system configuration is found
impossible.
However, changing the diameter of the connection cable and the power supply for the NZ2AW1C1BY enables
the system to be configured.
Item
Condition
Non-isolated remote I/O module (input)
• Number of I/O points: 4 points
• Module current consumption: 29mA
• Number of modules: 12
Connected load (three-wire sensor)
• Three-wire sensor current consumption: 13mA
• Number of sensors: 4
• Power voltage: 24V
10%
Diameter of transmission cable (DP, DN)
Cable diameter: 0.75
Power supply for the NZ2AW1C1BY
Power voltage: 24V
Item
Condition
Calculation formula 1)
(Ihin(A)
m) = I(A)
Maximum value of transmission cable supply current
(0.029 + (0.013
4))
12 = 0.972A
1A
Satisfied
Calculation formula 2)
Vm(V) -
V(V)
20V
24 - (0.972
50
0.025
2) = 24 - 2.43 = 21.57V
20V
Satisfied
Calculation formula 3)
Vm(V) -
V(V)
The lowest limit of the allowable voltage range for connected load
The lowest limit of the allowable voltage range for connected load = 24 - 24
0.1 = 21.6V
21.57V < 21.6V
Not satisfied
Содержание CC-Link-AnyWire Bitty Bridge
Страница 1: ...CC Link AnyWire Bitty Bridge Module User s Manual NZ2AW1C1BY ...
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Страница 24: ...22 2 4 External Dimensions Unit mm 15 4 3 85 141 5 DIN rail 3 8 2 5 66 69 40 100 51 ...
Страница 53: ...51 CHAPTER 10 CC LINK I O RESPONSE TIME 10 Memo ...
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