Stahl MCP/PB, Operating Instructions Manual

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250306 / MCP60300050
2015-10-23·BA00·III·en·00
Mounting and installation
15
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Flameproof Manual Call Points
Series MCP/PB
• Remove LK1 for LED activation in alarm or remove LK2 for LED activation in standby.
• Jumper/connection between terminal 1 and 2.
7.3.7 Standard devices with monitoring resistors and LED status light
Single pin MCP, switch normally closed in standby / normally open in alarm
• Ensure that connector wires from switch and LED are correctly installed as per
the diagram (see following figure).
• Standard variants with monitoring are only available with switch
normally closed in standby / normally open in alarm with LED activated.
• There is an 820 ohm resistor which is in-line with the LED.
When activated, the LED together with the resistor will draw a current.
On a 24 V DC system, this current is approximately 30 mA.
• In standby without the LED activated, the resistance of the the PCB
is 0 ohms.
• Resistor values are to be selected by the system designer,
depending on requirements of the system.
• For 24 V DC systems, a minimum resistor value of 470 ohms should
be used.
17567E00
17569E00
C
1
1a
2
3
4
4a
Connector block
Red wire for LED
Black wire for LED
Yellow wire for switch
Blue wire for switch
Red wire for switch
Red wire for LED
17546E00
Normal / Standby
1 Switch closed – end-of-line resistor
engaged
2 L / +
3 N / -
1a
2a
3a
4a 1
2
3
4
C
2
3
4
4a
1a
C
2
1
2
3
4
5
3
1
R1
6
7
R2