02/11/2015
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83894 metal interlock switches 83894121 / 83894131 3-pole Part number 83894131
Monitoring of moving guards for machines with a stopping time which is greater than the time taken to access the danger zone
Locked by removing the voltage, unlocked by applying voltage to the electromagnet
Metal bodies and heads
Heads have 4 possible positions at 90°
Positive opening contacts
Part numbers
Type
83 894 131
83894121 / 83894131 3-pole
Type of contacts
NC+NC+NO (NO break before make)
Action
Slow action
Specifications
Environment
Conforming to standards Products
Conforming to standards Machine assemblies
Certifications
Protective treatment in normal operation
Temperature Use (°C)
IEC 947-5-1, EN 60 947-5-1, UL 508, CSA C22-2 no.14, JIS C4520 (See P.3/4)
IEC 204-1, EN 60 204-1, EN 1088, EN 292O
UL, CSA
"TC"
-25 →+70
-40 →+70
Storage temperature (
0
C)
Vibration resistance according to IEC/EN 60068-2-6
Schok resistance according to IEC 28-2-27
Degree of protection according to IEC 529 and IEC 947-5-
IP 67
1
Cable entry
One threaded hole for cable gland 13
Electrical characteristics
Assigned working characteristics
Assigned insulation voltage according to IEC 947-5-1
Assigned insulation voltage according to UL 508, CSA
C22-2 no.14
Assigned impulse voltage according to IEC 947-5-1
Thermal rating according to IEC 947-5-1
Electric shock protection Class 2 according to IEC 536
Resistance between terminals according to IEC 954-5-4
Protection against short circuits
Connection Screw clamp terminals
Clamping capacity with or without ferrule
Electrical life according to IEC 947-5-1 appendix C
AC 15 B300 Ue = 240 V, Ie = 1.5 A or Ue = 120 V, Ie = 3 A DC 13 Q300 Ue = 250 V, Ie = 0.27 A or Ue = 125 V, Ie = 0.55 A
Ui = 500 V
Ui = 300 V
Uimp = 4 KV
Ithe = 6 A
≤ 30 mΩ
Cartridge fuse 10 A gG (gl)
min. 1 x 0,5 mm
2
, max. 1,5 mm
2
Environment
Electromagnet supply voltage (50/60 Hz in AC)
Maximum actuation speed
Minimum actuation speed
Resistance to removal of key
Mechanical life (operating cycles)
Minimun operating frequency (operating cycles per hour)
Minimum positive opening force
Cable entry according to NFC 68 300
Weight (g)
120 V AC / DC
0,5 m/s
0,01 m/s
2000 N
10
6
600
20 N
2 PG 13
1140
Electromagnet characteristics
Operating factor
Voltage limits
Service life
Consumption Inrush
Consumption Sealed
100 %
-20 % < +10 %
20 000
10 VA
10 VA
Indicator characteristics
Assigned insulation voltage according to IEC 947-5-1
Current consumption (mA)
Assigned working voltage AC or DC
Voltage limits AC or DC (including ripple)
Service life (h)
250 V
7 mA
110 V / 240 V
95...264 V
100 000
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015
Protection against voltage surges
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Accessories
Symbol
Accessories
Code
Straight key
79 214 578
Wide key
79 214 579
Flexible key
79 214 580
Principles
Type 83 894 1 safety switches are fitted with an electromagnet for locking/unlocking the guard.
With the guard locked, the force required to remove the key is
200 daN.
In addition to the 3-pole contact element actuated by the key, 83 894 2 limit switches also have a positive break type
"NC + NO" contact
element,
actuated by the electromagnet.
The "NC" contact is integrated in the machine safety circuit, and the "NO" contact indicates the position of the electromagnet.
Principles
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
02/11/2015
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Type 83 894 1 safety switches are supplied with a key-operated lock which can be used to unlock the moving guard, bypassing the electromagnet.
Unlocking using a key-operated lock is recommended in the following cases :
machine maintenance (if the key is turned to "UNLOCK" and then removed, this will prevent the machine from restarting accidentally, therefore ensuring the safety of maintenance personnel).
mains failure
problem with unlocking (locking cannot be released : fail-safe condition). Unlocking by applying voltage to the electromagnet always takes priority over unlocking using a key-operated lock.
The locking mechanism for standard devices allows the key to be removed in the "LOCK" and "UNLOCK" positions.
Principles
Power supply for the electromagnet on 83 894 1
The electromagnet for type 83 894 1 safety switches runs on D.C. and is therefore particularly reliable.
As it is protected by a
bridge rectifier
A.C. or D.C. supplies can be used (24 V, 48 V, 120 V or 230 V).
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
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