SKF On-line System WVT User Manual page 73

CMWA 7910 Installation Drawing No. G14/0361 for Externally Powered Installations
General Installation Notes
1. This unit may be powered from an external power source in the range 10-30 VDC.
These notes refer to installations where the device is powered from an external
power supply.
2. Connections must adhere to the restrictions defined in the table below, Entity
Parameters, for each type of signal.
3. Non-incendive sensors may be attached to the device when externally powered,
provided that the Entity Parameter criteria are met.
4. The enclosure cover and the transparent plastic barrier must be fitted when the
unit is situated in a hazardous area and may not be removed unless the area is
known to be non-hazardous.
5. Cable glands must not be substituted for any other type. Use only Hummel gland
part number 1.640.1200.50, or Certified alternative.
6. To maintain sealing, unused glands must not be left open. Use gland blanking plugs
supplied with the unit, Hummel part number 1.199.1200.50, or Certified
alternative.
7. No additional drilling or machining of the enclosure is permitted. All cables must be
inserted through one of the installed glands.
8. WARNING – substitution of components may impair suitability for Class 1, Div 2.
AVERTISSEMENT – substitution de composants peut nuire à la conformité de
Classe 1, Division 2
9. Batteries must not be inserted into the unit when used on external power.
10. For signal inputs, a single channel is shown in this drawing for clarity – additional
channels are wired similarly.
11. Sensors are to be certified for use in Division 2 areas. Sensors can only be installed
in a Div 2 area and are not to be installed in a Div 1 area.
Terminal Terminal
Name ID
CH1- J1,J2,
CH4 J3,J4
NAMUR J5
ISOL J6
EXT PWR J7
The following criteria must be met for Entity Parameters:
Voc or Uo ≤ Vmax or Ui; Isc or Io ≤ Imax or Ii; Po ≤ Pi (if applicable); Ca or Co ≥ Ci + Ccable; La or Lo ≥ Li + Lcable
SKF Multilog On-line System WVT
User Manual
Vmax/ Imax/ Ci
Ui(V) Ii(mA) (nF)
-- -- --
-- -- --
26 100 --
30 130 0
Setting Up the SKF Multilog WVT
Entity Parameters
Voc/ Isc/
Li Uo Io
(uH) (V) (mA)
-- 5.88 62
-- 7.14 38
-- -- 100
46.2 -- --
Pout/ Ca/ La/
Po Co Lo
(mW) (uF) (mH)
365 550 17
272 110 45
-- -- --
-- -- --
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