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DS440IS
3.3
Sizing the system
The cable routes are sized to suit the characteristics of the components used and the electrical
specifications given in the certificates.
3.3.1
PS440/xxx D440IS connection
Exi circuit - Maximum length = 10 m
3.3.2
Connection of the D440IS scale - Load cells type Eurocell IS/xxx
Maximum number of 700 Ohm cells = 8
Maximum number of 350 Ohm cells = 4
Exi circuit - Maximum length from terminal to junction box = 200 m
3.3.3
Connection of D440IS - clean contact inputs
Exi circuit - Maximum length = 50 m
3.3.4
Connection of PS440/xxx Clean contact outputs towards safe zone
The length of this route depends on the characteristics of the barriers used by the customer.
For example, with an :
Exi circuit - Maximum length = 200 m
3.3.5
Connection of PS440-Axxx - Output Exi
Using Atex parameters of Exi outputs, the device can be connected in ATEX marked danger zones
with Exi protection method (e.g. low current ATEX solenoid valves, etc.).
The Manufacturer does not size this route. The relative calculations are at the customer's charge.
3.3.6
Connection of D440IS - 4-20mA analogue output
The length of this route depends on the characteristics of the customer's reading device.
The Manufacturer does not size this route. The relative calculations are at the customer's charge.
