
5. WIRING
IMSRM02-E6
62
5.2 Module Wiring
For details on terminal configuration of each modules, see
3. DESCRIPTION OF EACH
MODULES (P. 19)
.
Re-confirmation of the specifications
Re-confirm the input/output specifications of each module.
In particular, take adequate care of the input current and voltage for the inputs, and the output current
and voltage for the outputs. If a voltage is applied or if a current flows exceeding the maximum
opening/closing capacity, this will cause the problems such as breakdowns, damage, fires, etc.
Cautions for wiring
•
Configure the wiring so that it will be easy to carry out the replacement of modules.
•
Confirm that each module is securely attached to the mother block.
•
Confirm that the terminal panels and connectors are securely attached to the modules.
•
Securely tighten the terminal screws to ensure that loose screws do not become the source of mis-
operation.
Leakage current at 24 V DC input
When a two-wire system sensor (proximity switch or photoelectric switch) or limit switch with LED
is used, the lamp may light due to leakage current or incorrect input.
No problem arises for a leakage current of less than 0.75 mA, but for 0.75 mA or more, connect a
bleeder resistor as shown in figure to lower the input impedance.
Two-wire system
sensor, etc.
Input power
supply
Bleeder resistor
DI module
41.6
10.4 I - 4
R =
k
Ω
or smaller
2.3
R
W =
W or larger
I : Device leakage current
R:
Bleeder resistance value (
Ω
)
W: Watt generated in bleeder resistor (W)
[Reference] The above equations are obtained from the following equations.
Input voltage (24)
R
×
Input voltage (2.3)
Input voltage (24)
R +
Input voltage (2.3)
I
×
≤
OFF voltage (4)
W
≥
×
Input voltage (24)
×
Allowance (4)
Input voltage (24)
R
Содержание SR Mini System
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