Peak PEAK IOM57, Руководство по установке

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PEAK® IOM57 Input/Output Modules Installation Instructions
13
Cable and wire length guidelines
Table 5 defines cable length guidelines for the various wire sizes that you can use to wire low-voltage (<30 V) input
and outputs.
Maximum cable length versus load current
Use Figure 8 to estimate the maximum cable length relative to the wire size and the load current in mA when you
wire the inputs and outputs.
Note: Figure 8 applies to the low-voltage (<30 V) inputs and outputs only. The load that is connected to the relay
and local electrical codes determines the required size and length for high-voltage (>30 V) relay outputs.
Table 5: Cable length guidelines and recommended wire sizes for low-voltage (<30 V) inputs and outputs
Guideline
1
1. The required wire sizes and lengths for high-voltage (>30V) relay outputs are determined by the load connected to the relay
and local, national, or regional electrical codes.
Wire size or gauge and type Maximum cable length
and type Assumptions
A
1.5 mm
2
(18 AWG) stranded copper
457 m (1,500 ft) twisted
wire
100 mV maximum voltage drop
Depending on cable and the connected
input or output device, you may have to
define an offset in the setup software
for the input or output point.
0.8 mm (20 AWG) stranded copper 297 m (975 ft) twisted wire
0.6 mm (22 AWG) stranded copper 183 m (600 ft) twisted wire
N/A (24 AWG) stranded copper 107 m (350 ft) twisted wire
B
1.5 mm
2
(18 AWG) stranded copper
229 m (750 ft) twisted wire 100 mV maximum voltage drop
Depending on cable and the connected
input or output device, you may have to
define an offset in the setup software
for the input or output point.
0.8 mm (20 AWG) stranded copper 137 m (450 ft) twisted wire
0.6 mm (22 AWG) stranded copper 91 m (300 ft) twisted wire
N/A (24 AWG) stranded copper 61 m (200 ft) twisted wire
C See Figure 8 to select wire size or
gauge. Use stranded copper wire.
See Figure 8 to determine
cable length. Use twisted
wire cable.
N/A
Figure 8: Maximum wire length for low-voltage (<30 V) inputs and outputs by current and wire size
450 500 400
350 300
250 200 150
100
50
0
0 m (0 ft)
15.2 m (50 ft)
30.5 m (100 ft)
45.7 m (150 ft)
61 m (200 ft)
76.2 m (250 ft)
91.4 m (300 ft)
106.7 m (350 ft)
121.9 m (400 ft)
137.2 m (450 ft)
Load Current (mA)
Length
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1.5 mm (18 AWG)
2
0.8 mm (20 AWG)
0.6 mm (22 AWG)
N/A (24 AWG )