Bosch Appliances 3.5 manual 8: Press-to-talkPTT key, 10: Externally powered relay, en

2011-02 Installation and User Instructions 5 Call Stations

en 222

It is possible to connect the following to the control inputs/outputs connector:

•Press-to-talk (PTT) key. See figure 18.8 for a connection diagram. The two resistors must be placed in the circuit, because the contact is always supervised by the system software.

•Internally powered lamp or LED. See figure 18.9 for a connection diagram.

•Externally powered lamp or LED. See figure 18.9 for a connection diagram.

•Externally powered relay. See figure 18.11 for a connection diagram.

10 kΩ	PTT Input	10 kΩ
	Contact
5V
		10 kΩ
	GND

figure 18.8: Press-to-talk (PTT) key

I < 100 mA

Max. 56V

Output X, IN

GND

figure 18.10: Externally powered relay

I < 100 mA

Max. 56V

Output X, IN

GND

figure 18.11: Externally powered relay

	+5V, 30 mA
	R2	R2	R2	7	R2	R2
	3		5		9	11
	R1		R1	R1	R1	R1
	PI		FI	CI	SPI	SEI
	4		6	8	10	12
	62V	62V	62V		62V	62V
PI	= Power Indicator		R1 = 0 Ω, R2 = 330 Ω (HW07/04 and later)
FI	= Fault Indicator		R1 = 180 Ω, R2 = 150 Ω (HW07/00 to HW07/03)
CI	= Call Indicator		R1 = 330 Ω, R2 = 0 Ω (before HW07/00)
SPI = System Priority Indicator
SEI = System Emergency Indicator

figure 18.9: Internally powered LED

Bosch Security Systems 2011-02