4
D5231
- SIL 2 Switch/Proximity Detector Repeater, O.C. Output
G.M. International ISM0172-1
Parameters Table
Must
be
Hazardous Area/
Hazardous Locations
Device Parameters
D5231 Associated
Apparatus Parameters
Must
be
Hazardous Area/
Hazardous Locations
Cable Parameters
Uo / Voc = 11.2 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 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 D5231 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 group. See parameters indicated in the table below:
D5231 Terminals
21-13, 21-14,
22-15, 22-16, 23-17,
23-18, 24-19, 24-20
≤
D5231 Terminals
D5231 Associated Apparatus
Parameters Cenelec (US)
Ci / Ci C cable
≥
IIC (A, B)
Co / Ca = 1.84 µF
Co / Ca = 12.6 µF
Co / Ca = 54 µF
IIB (C)
IIA (D)
Co / Ca = 49 µF
Co / Ca = 12.6 µF
I
iaD (E, F, G)
IIC (A, B)
Lo / La = 253 mH
Lo / La = 1009 mH
Lo / La = 2017 mH
IIB (C)
IIA (D)
Lo / La = 3309 mH
Lo / La = 1009 mH
I
iaD (E, F, G)
Io / Isc = 12 mA
Ii/ Imax
≤
Po / Po = 34 mW
Pi / Pi
≤
21-13, 21-14,
22-15, 22-16, 23-17,
23-18, 24-19, 24-20
Li / Li L cable
≥
IIC (A, B)
Lo / Ro = 1070 µH/
Ω
Lo / Ro = 4277 µH/
Ω
Lo / Ro = 8554 µH/
Ω
IIB (C)
IIA (D)
Lo / Ro = 14033 µH/
Ω
Lo / Ro = 4277 µH/
Ω
I
iaD (E, F, G)
Li / Ri device and
L cable / R cable
≥
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 180pF per meter (60pF per foot), Inductance 0.60µH per meter (0.20µH per foot).
