Overview Of Pressure Switch Form A - Pneumatic Flange Connection; Overview Of Pressure Switch Form A - Pneumatic Connection, Internal Thread G1/4; Overview Of Pressure Switch M12X1 - Pneumatic Flange Connection; Overview Of Pressure Switch M12X1 - Pneumatic Connection, Internal Thread G1/4 - Emerson AVENTICS PM1 Instrucciones De Servicio

The contact switches (see g Fig. 6 and g Fig. 7)
• when pressure increases from 1-2 to 1-3 (form A)/from 1-2 to 1-4 (M12x1) -
make contact (NO)
• on decreasing pressure from 1-3 to 1-2 (form A)/from 1-4 to 1-2 (M12x1) -
break contact (NC)
For vacuum pressure switches (see g Fig. 8 and g Fig. 9)
• when the vacuum increases from 1-3 to 1-2 (form A)/from 1-4 to 1-2 (M12x1)
- make contact (NO)
• on decreasing vacuum from 1-2 to 1-3 (form A)/from 1-2 to 1-4 (M12x1) -
break contact (NC)
4.3 Overview of pressure switch form A – pneumatic flange
connection
See g Fig. 1
1 O-ring ø 5x1.5
(included in scope of delivery except
for CNOMO version)
3 Electrical connector central screw
+0.1
M3x35; M = 0.4 Nm
A
(depending on scope of delivery)
5 Adjustment screw for fine adjust-
ment, self-holding
(the adjustment screw is perma-
nently set in the CNOMO version and
secured with sealing compound)
4.4 Overview of pressure switch form A – pneumatic connec-
tion, internal thread G1/4
See g Fig. 2
1 Electrical connector (depending on
version)
3 Electrical connector central screw
+0.1
M3x35; M = 0.4 Nm
A
(depending on scope of delivery)
4.5 Overview of pressure switch M12x1 – pneumatic flange
connection
See g Fig. 3
1 O-ring ø 5x1.5 (included in scope of
delivery)
3 M12 connection rotatable by 90° and
30° with detent, A-coding
4.6 Overview of pressure switch M12x1 – pneumatic connec-
tion, internal thread G1/4
See g Fig. 4
1 M12 connection rotatable by 90° and
30° with detent, A-coding
3 Adjustment screw for fine adjust-
ment, self-holding
INFO: For material numbers, please refer to the online catalog.
4.7 Overview of pressure switch with push-in fitting/without
electrical connector – pneumatic connection, internal
thread G1/4
See g Fig. 5
1 Push-in fitting
3 Thread for central screw M3x35
Permissible tightening torque
M = 0.4 Nm
A +0.1

4.8 Product identification

Observe the product information on the product and packaging.
u
AVENTICS™ PM1 | R412018457-BAL-001-AI | English
2 Electrical connector (depending on
version)
4 Cylinder screw M5 x 30 ISO 1207 (2x);
+0.5
M = 2.5 Nm (included in scope of
A
delivery except for CNOMO version)
+1
2 Connection G1/4, M = 12 Nm
A
4 Adjustment screw for fine adjust-
ment, self-holding
2 Cylinder screw M5x30 ISO 1207 (2x);
MA = 2.5+0.5 Nm (included in scope
of delivery)
4 Adjustment screw for fine adjust-
ment, self-holding
+1
2 Connection G1/4, M = 12 Nm
A
+1
2 Connection G1/4, M = 12 Nm
A
4 Adjustment screw for fine adjust-
ment, self-holding

5 Assembly

Let the product acclimatize for several hours before commissioning, other-
u
wise, water may condense in the housing.
Danger of injury if assembled under pressure or voltage!
Assembling when under pressure or electrical voltage can lead to injuries and
damage to the product or system components.
1. Make sure that the relevant system component is not under voltage or
pressure before you assemble the product.
2. Protect the system against being restarted.
5.1 Assembling the pressure switch and connecting the
pneumatics
1. Make sure that the system is not under voltage or pressure.
2. Connect the pressure switch with the pressure system:
+1
- Connection G1/4: M = 12
A
- Flange connection M5: M = 2.5
A

5.2 Electrically connecting pressure switch form A

See g Fig. 10
u Only use connection cables which fulfill the required cable quality
and the cable fitting diameter of 6 – 8 mm.
u Use a suitable temperature-resistant cable with ambient tempera-
tures of > 70°C.
1. Disassemble the electrical connector.
2. Fit the connection with the screw terminals (M
The terminals are intended for cross-sections of up to 1.5 mm
3. Connect the protective conductor.
4. Connect the electrical connector.
5. Check that the cable fitting is mounted to the plug to ensure the IP65 protec-
tion class (M = 1.8 Nm + 0.2 Nm).
A
6. Carefully mount the electrical connector to the pressure switch to ensure the
IP65 protection class (M = 0.4 Nm + 0.1 Nm).
A

5.3 Electrically connecting pressure switch M12x1

See g Fig. 11
u Only operate the pressure switch in an electrical circuit with safe
isolation from the mains (PELV in acc. with DIN VDE 0100-410,
IEC 364-4-43, HD 384.4.41 S2, EN 60079-14). The electrical circuit
must be potential-free (not grounded).
Electrical connection on pressure switch M12x1 – pin assignments
Pin 1
Color Brown (BN)
INFO: The cable is not included in the scope of delivery.
Proceed as follows for connection:
1. Thread the cable onto the round plug connector.
2. Hand tighten the knurled nut on the round plug connector (audible/tactile en-
gagement).

5.3.1 Suggestion for spark-quenching

DC voltage protective circuit
See g Fig. 12
Connect the diode (G) parallel to the load (consumer) (F).
u
Pay attention to the correct polarity when connecting the diode! Se-
lection criteria for the diode: U
AC voltage protective circuit
See g Fig. 13
Connect the RC element (E) parallel to the load (consumer) (F).
u
CAUTION
Nm
+0.5
Nm
= 0.4 Nm).
A
2 3 4
White (WH) Blue (BU) Black (BK)
≥ 1.4 x U ; I ≥ I
Diode Mains Diode
2
.
Load
10