Phoenix Contact SCK-M-U-1500V Handleiding (128 Pagina's)

Handleiding

Installation

105608_en_01 PHOENIX CONTACT 61

Figure 6-16 Performance characteristics of the communication module

(SCK-C-MODBUS) with a connected current measuring module

(SCK-M-I-…) and a voltage measuring module (SCK-M-U-1500V)

The typical values for current consumption apply, if the input voltage is in the required range

of 24 V DC. If the input voltage drops, current consumption may increase up to the specified

maximum value. Any further deviation results in device shutdown.

Example: 1 x SCK-C-MODBUS with 2 connected SCK-M-I-8S-20A, each of which includes

voltage measurement via SCK-M-U-1500V

I

typ

= 22 mA + 2*(43 mA + 8 mA) = 124 mA

To account for current peaks, multiply the result by the safety factor of three. This means

that a total current consumption of 372 mA must be taken into account.

Table 6-12 Current consumption

Module Typical (at 24 V DC) Maximum

SCK-C-MODBUS 22 mA 45 mA

SCK-M-I-8S-20A 43 mA 50 mA

SCK-M-U-1500V 8 mA 65 mA

0

500

1000

1500

2000

2500

0 5 10 15 20 25 30 35

P [mW]

I [mA]

U [V]

U = 21,6…30 V

N

P [mW]

I [mA]

0

10

20

30

40

50

60

70

80

90

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