G.M. International D1020D, Инструкция и руководство по безопасности

Страница: 4 / 9

4
D1020 - SIL 2 Powered Isolating Driver Smart-Hart compatible G.M. International ISM0012-14
Parameters Table
Must
be
Hazardous Area/
Hazardous Locations
Device Parameters
D1020 Associated
Apparatus Parameters
Uo / Voc = 25.2 V Ui / Vmax
In the system safety analysis, always check the Hazardous Area/Hazardous Locations devices to conform with the related system documentation, if the device is Intrinsically Safe check
its suitability for the Hazardous Area/Hazardous Locations and gas group encountered and that its maximum allowable voltage, current, power (Ui/Vmax, Ii/Imax, Pi/Pi) are not exceeded
by the safety parameters (Uo/Voc, Io/Isc, Po/Po) of the D1020 series Associated Apparatus connected to it. Also consider the maximum operating temperature of the field device, check
that added connecting cable and field device capacitance and inductance do not exceed the limits (Co/Ca, Lo/La, Lo/Ro) given in the Associated Apparatus parameters for the effective
gas group. See parameters on
enclosure side and the ones indicated in the table below:
D1020 Terminals
Ch1
Ch2
14 - 15
10 - 11
Io / Isc = 87 mA
Ch1
Ch2
14 - 15
10 - 11
Po / Po = 548 mW
Ch1
Ch2
14 - 15
10 - 11
≤
Ii/ Imax ≤
Pi / Pi ≤
For installations in which both the Ci and Li of the Intrinsically Safe apparatus exceed 1 % of the Co and Lo parameters of the Associated Apparatus (excluding the cable),
then 50 % of Co and Lo parameters are applicable and shall not be exceeded
(50 % of the Co and Lo become the limits which must include the cable such that
Ci C cable ≤ 50 % of Co and Li L cable ≤ 50 % of Lo).
If the cable parameters are unknown, the following value may be used: Capacitance 60pF per foot (180pF per meter), Inductance 0.20µH per foot (0.60µH per meter).
The Intrinsic Safety Entity Concept allows the interconnection of Intrinsically Safe devices approved with entity parameters not specifically examined in combination as a system when
the above conditions are respected.
For Division 1 and Zone 0 installations, the configuration of Intrinsically Safe Equipment must be FM approved under Entity Concept (or third party approved);
for Division 2 installations, the configuration of Intrinsically Safe Equipment must be FM approved under non-incendive field wiring or Entity Concept (or third party approved).
Must
be
Hazardous Area/
Hazardous Locations
Cable Parameters
D1020 Terminals
Ch1
Ch2
14 - 15
10 - 11
D1020 Associated
Apparatus Parameters
Ci / Ci C cable ≥
IIC (A, B)
Co / Ca = 105 nF
Co / Ca = 819 nF
Co / Ca = 2.899 µF
IIB (C)
IIA (D)
NOTE for USA and Canada:
IIC equal to Gas Groups A, B, C, D, E, F and G
IIB equal to Gas Groups C, D, E, F and G
IIA equal to Gas Groups D, E, F and G
Co / Ca = 4.15 µF
Co / Ca = 819 nF
I
IIIC
Ch1
Ch2
14 - 15
10 - 11
Li / Li L cable ≥
IIC (A, B)
Lo / La = 4.6 mH
Lo / La = 18.7 mH
Lo / La = 37.5 mH
IIB (C)
IIA (D)
Lo / La = 61.5 mH
Lo / La = 18.7 mH
I
IIIC
Ch1
Ch2
14 - 15
10 - 11
Li / Ri device and
L cable / R cable
≥
IIC (A, B) Lo / Ro = 64.9 µH/ Ω
Lo / Ro = 259.6 µH/ Ω
Lo / Ro = 519.3 µH/ Ω
IIB (C)
IIA (D)
Lo / Ro = 851.9 µH/ Ω
Lo / Ro = 259.6 µH/ Ω
I
IIIC