Emerson Rosemount 2120, Справочное руководство

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Relay DPCO cassette (12 Vdc nominal version)
Figure 4-4: Relay DPCO Cassette, 12 Vdc Nominal Version (Green Label) – Code E
Example of external wiring
Isolate supply before making connections.
U = 9 - 30 V (dc)
I < 4 mA
4
cos f = 1;
L/R = 0 ms
I
MAX
= 2 A
cos f = 0.4;
L/R = 7 ms
I
MAX
= 1 A
U
MAX
= 30 V U
MAX
= 30 V
P
MAX
= 60 W P
MAX
= 30 W
4 5 6
NC C NO
7 8 9
NC C NO
NC C NO NC C NO
0V
Fuse 0.5 (T)
DPST
+V
Note
A DPST (Double Pole, Single Throw) on/off switch must be fitted for safe disconnection of
the power supply. Fit the DPST switch as near as possible to the Rosemount 2120. Keep
the DPST switch free of obstructions. Label the DPST switch to indicate it is the supply
disconnection device for the Rosemount 2120.
Table 4-8: Electrical Parameters
Parameter Value
U 9 - 30 Vdc
I < 4 mA
Table 4-9: NC, C, and NO Terminals
Parameter Resistive load Inductive load
cos
ϕ
1 0.4
L/R 0 ms 7 ms
I
MAX
2 A 1 A
U
MAX
30 V 30 V
P
MAX
60 W 30 W
Electrical installation Reference Manual
March 2022 00809-0100-4030
42 Reference Manual