Mitsubishi Electric NZ2MFB1-32D, User Manual

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6 INSTALLATION AND WIRING
6.1 Before Using the I/O Modules
Precautions when using the contact output module
When using the contact output module, carefully consider the following points:
• Relay life (contact switching life)
• Influence on the relay life by a connected load
• Measures against back EMF
■
Relay life (contact switching life)
Applicable module: NZ2MFB2-16R
The relay life varies depending on the environment where a module is used. When using a module, take the use environment
into consideration.
The relay life curve below shows the actual service values, not the guaranteed values. Since an actual contact switching life
may be shorter than the relay life curve, replace the module with a sufficient margin for the life.
X: Switching current (A)
Y: Switching life (in units of 10000 times)

(L/R): Time constant
cos

: Power factor
Use environment Contact switching life
Rated switching voltage/current load 100 thousand times
1.5A at 200VAC, 1A at 240VAC (COS

= 0.7) 100 thousand times
0.4A at 200VAC, 0.3A at 240VAC (COS

= 0.7) 300 thousand times
1A at 200VAC, 0.5A at 240VAC (COS

= 0.35) 100 thousand times
0.3A at 200VAC, 0.15A at 240VAC (COS

= 0.35) 300 thousand times
1A at 24VDC, 0.1A at 100VDC (L/R = 7ms) 100 thousand times
0.3A at 24VDC, 0.03A at 100VDC (L/R = 7ms) 300 thousand times
200
Y
100
70
50
30
20
10
7
5
3
2
1
0.1 0.2 0.3 0.5 0.7 1 2 3 5
X
AC100V cos
Φ
=0.7
DC30V
τ
=0ms
AC200V cos
Φ
=0.7
AC200V cos
Φ
=0.35
DC24V
τ
=7ms
AC120V cos
Φ
=0.2
AC240V cos
Φ
=0.2
DC100V
τ
=7ms
AC100V cos
Φ
=0.35