Siemens SIWAREX WL200 Series, Operating Instructions Manual

Page: 65 / 102

Technical data
9.3 Approval to OIML R60
SIWAREX WL200
Operating Instructions, 07/2016, A5E02199611B-03
65
Zone 2 in protection type "ic"
Connect the load cell only to devices that have been approved as at least "ic" certified
(intrinsically safe) devices in category 3.
Be sure to adhere to the permissible values.
For SIWAREX WL280 RN-S SA
Maximum values of the auxiliary power supply and signal circuit
U
i
= 20 V DC I
i
= 600 mA P
i
= 6 W
L
i
= 40 μH C
i
= 12 nF
Zone 2 in type of protection "nL" - limited energy resources
● Connect the load cell only to devices that have been approved as "nL" certified devices
(limited energy resources) in category 3.
● Note the permissible values in each case according to the prototype test certificate
FM09ATEX0040X and FM09ATEX0041X.
For SIWAREX WL230, WL250, WL260, WL270 CP-S SA, WL270 CP-S SB
Maximum values of the auxiliary power supply and signal circuit
U
i
= 20 V DC I
i
= 600 mA P
i
= 6 W
L
i
= 40 μH C
i
= 12 nF
Zone 2 in type of protection "nA" - non-sparking equipment
● Adhere to the conditions for installers applicable to this type of protection.
● The maximum permissible input voltage is U
n
= 20 V DC.
● Take measures to ensure that the supply voltage (including transients) does not rise
above 140% of the rated voltage.
9.3 Approval to OIML R60
Most SIWAREX load cells are approved for use in scales requiring official calibration of
Class III, EN 45501.
This is determined by the specifications of the respective type.
The above statements do not apply to load cells outside the standard product range.
Descriptions of load cell variants that are not included in the standard product range can be
found on the appropriate data sheet.