Transcript
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UE 42-2 HD
Safety relay For two-hand operation UE 42-2 HD
Safety class Class 4 Supply voltage 24 V DC/V AC
Features Output contacts Safety 2
Auxiliary 1
Dimensions 96.5 x 22.5 x 114 mm Function Dual-channel wiring with transversal short circuit detection
Safety Category 4 approved to EN 954-1 Two-hand controls with Type III C requirements to EN 574 and to EN 954-1, Category 4 Outputs: 2 normally open contacts, 1
Automatic start
normally closed contact
External device monitoring (EDM)
Automatic reset
Version with connection clamps available
External device monitoring (EDM) 3 LED signals Dual-channel control Monitors the integrity of connection of safety circuit and control (ts = 0.5 s)
Applications Redundant circuits and auto control Protect from hazards caused by movable parts on a machine Monitoring of two-hand control circuits
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UE 42-2 HD Dimensions
Functionality The UE 42-2 HD unit corresponds to EN 574 Type III C. A prerequisite for the release of the outputs is that the two inputs (e.g. two-hand pushbuttons) are actuated within 0.5 sec. After applying the supply voltage to the terminals A1 - A2, the LED SUPPLY illuminates to indicate that electrical power is present. Pressing the two-hand pushbuttons S1 and S2 at the same time closes the two normally open contacts. Releasing even one of the buttons will cause the circuits to adopt the open circuit status. A renewed attempt to initiate starting is only possible if both Start buttons are set to their nominal start position (for two-hand pushbuttons units: if both have been released) and the normally closed contact is closed.
External device monitoring (EDM) The UE 42-2 HD can take over the function of external device monitoring. The normally
Safety Relays
closed contacts of the external relays are switching in series, connected to the terminals Y1 - Y2. Automatic start The UE 42-2 HD has an Automatic start facility.
Monitoring of simultaneous activation Pressing the Start buttons at the same time is monitored. When both Start buttons are activated within 0.5 sec, normally open contacts close and the normally closed contact opens.
The UE 42-2 HD 2 unit has screw type terminals. The UE 42-2 HD 3 unit has removable terminals. SAFETY CATALOG 2004
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UE 42-2 HD Technical specifications General data description
Supply voltage to A1/A2 Electrical output circuit > 25 V AC/60 V DC Electrical output circuit < 25 V AC/60 V DC Safety category: EN 954-1 Supply voltage VS (A1/A2) Power consumption AC DC Residual ripple in DC mode (within the limits of VS) Nominal frequency in AC mode Control voltage (Y11- Y21) Control voltage Control current Short circuit between Y11 and A2 Fuse Galvanic separation between A1/A2 and Y11/Y21 Input circuits (Y12 - Y14 and Y22 - Y23) Input current Reset time Activation time tolerance between the two Start buttons Minimum switch-off time Line resistance at the input circuit Switch-on time (upon applying the supply voltage) Output circuits (13 - 14, 23 - 24, 31 - 32) Response time (K1/K2) Relay contacts
Contact type Contact material Load capacity of contacts Switching voltage Switching current Total current across all contacts Application category to EN 60 947-5-1
Permitted switching frequency Mechanical service life (switching cycles) Electrical service life (dependent upon loading) Operating data Surge voltage rating (Vimp) Excess voltage category Contamination rating of the unit (EN 50 178) External Internal Voltage rating Test voltage Veff (50 Hz) EN 60 439-1 Protection type Housing Terminals Radio interference Interference emission according to Ambient operating temperature Storage temperature Cross sections of electrical conductors single strand wire (2x, identical cross section) single strand wire (1x) fine stranded wire with terminal crimps (2x, identical cross section fine stranded wire with terminal crimps (1x) Weight
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min.
typ.
max.
24 V DC
4 26.4 V DC
PELV PELV or SELV 20.4 V AC/DC
2.7 V A 1.5 W 2.4 VPP 60 Hz
50 Hz 24 V DC 60 mA
1000 mA PTC resistor no 60 mA 40 ms 500 ms 250 ms < 70 Ohm 250 ms 50 ms 2 normally open contacts (NO), safety relevant 1 normally open contact (NO), not safety relevant positively guided Silver alloy; gold-plated 10 V AC/DC 10mA
230 V AC/30 V DC 6A 12A
AC-15 Ue 230 V AC, Ie 4 A (360 c/h) AC-15 Ue 230 V AC, Ie 3 A (3600 c/h) DC-13 Ue 24 V DC, Ie 4 A (360 c/h) DC-13 Ue 24 V DC, Ie 2.5 A (3600c/h) 3600 c/h 1 x 107 2 x 106 4 kV III 3 2 300 V AC 2 kV IP 40 IP 20 EN 60 947-1 02/99 EN 60 947-1 02/99 -25°C -25°C
+55°C +75°C
0.14 mm2 0.14 mm2
0.75 mm2 2.5 mm2
0.25 mm2 0.25 mm2 0.2 Kg
0.5 mm2 2.5 mm2
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UE 42-2 HD Internal circuitry
Safety Relays
Connection drawing
Selection table
Model UE 42UE 42-
Connection (terminal type) Direct wire Removable
Output 2 2
HD HD
2 3
Supply voltage 24 V AC/DC D2 D2
Part number 6 024 878 6 024 881
We recommend contacting Customer Service for product selection SAFETY CATALOG 2004
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