Wiring - Honeywell Krom Schroder DG H Series Operating Instructions Manual

Negative pressure measurement at port 1
5 Seal port .
2
2
Negative pressure measurement at port 
2
5 Seal port 1.
0
2
0
2
–

Wiring

▷ If the DG..G has switched a voltage > 24 V and
a current > 0.1 A at cos φ = 1 or > 0.05 A at
cos φ = 0.6 once, the gold plating on the con-
tacts will have been burnt through. It can then
only be operated at this power rating or higher
power rating.
▷ Pressure switch DG can be used in Zone 1
(21) and 2 (22) hazardous areas if an isolating
amplifier is installed upstream in the safe area
as "Ex-i" apparatus pursuant to EN 60079-11
(VDE 0170-7):2012.
▷ DG as "simple electrical apparatus" pursuant to
EN 60079-11:2012 corresponds to the Tempera-
ture class T6, Group II. The internal inductance/
capacitance is Li = 0.2 μH/Ci = 8 pF.
CAUTION
To ensure that the DG is not damaged during opera-
tion, note the switching capacity, see page 7
(Technical data).
▷ In the case of low switching capacities, such as
24 V, 8 mA, for example, we recommend using
an RC module (22 Ω, 1 μF) in air containing
silicone or oil.
C = 1 µF
NO
2
NC
1
1 Disconnect the system from the electrical power
supply.
1
Rp 1/4
–
1
–
1
1
Rp 1/4
Rp 1/4
p =
max
2
Rp 1/4
–
Rp 1/4
p =
max
R = 22
COM
3
2
5
Rp 1/4
M16 x 1,5:
ø 4–10 mm
▷ Contacts  and  close when subject to increas-
ing pressure. Contacts 1 and  close when sub-
ject to falling pressure.
L1
3
COM
2
NO NC
DG 1,5I and DG 1I
▷ The connection of DG 1,5l and DG 12l depends
on the positive or negative adjusting range.
DG 12I
▷ In the negative adjusting range, the template
which can be found in the unit displays the con-
nection diagram.
1
2
NC
NO
▷ In the positive adjusting range, remove the tem-
plate and wire the unit as shown in the engraved
connection diagram.
GB-4
3 4
6 7
1
2
NC
NO
1
DG 1,5I
NC 1
3
COM
2
NO
µ
NO
COM
2
NC 3
1
3
COM
3
COM
N