Phoenix Contact IB IL AO 4/U/0-10-ECO Handleiding (190 Pagina's)

Handleiding

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Calculation examples for power dissipation and working points

6452_en_11 Phoenix Contact 173 / 188

Power dissipation of the

housing

The value for the power dissipation of the housing is specified in every terminal-specific

data sheet.

The power dissipation of the housing for the specified terminal is 2.7 W within the oper-

ating temperature range of -25°C to +55°C. The calculated power dissipation for the

electronics therefore does not exceed the permissible upper limit.

Maximum load Even with the maximum permissible load current (0.5 A per channel), the upper limit of

2.7 W is not exceeded within the permissible temperature range of

-25 °C to +55 °C.

P

TOT

= 0.19 W + 8 x [0.1 W + (0.5 A)

2

x 0.4 ]

P

TOT

= 1.79 W

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