BVW 3312 / BVW 3313 Abblendsteuerung

BZ893T
12W PWM LED / Bulb dimmer
36VDC
Without external control input
B+Z Art. Nr: 651
According to standard EN 50155
Electronic devices in rolling stock
Content:
1.
2.
3.
4.
Page:
Application / Function
Technical data
Block diagram
Measures
2
2/3/4
4
4
Application / function
B + Z Elektronik AG
CH-8108 Dällikon
Tel: +41(0)44 8440355
www.bahnelektronik.ch
Page: 1/4
We reserve all rights to this document and the object described therein. Any reproduction, disclosure to third parties, or any
other utilization of this document is prohibited without our express permission. © B+Z Elektronik AG
This device is a digital 1-channel LED dimmer with 255 dimmer levels, for the flicker-free dimming of LED and /
or bulb lights in the driver's cab, e.g. LED rows, illuminated pushbuttons, etc., for DIN rail mounting.
The output voltage is pulse width modulated with high clock frequency. The circuit is short-circuit-proof on the
output side for a short time. If it is overloaded for a longer time, it switches off automatically and opens the
diagnostic contact. Thereafter, an interruption of the operating voltage is required, so that the normal operating
state can be restored.
In order to achieve different luminances of the illuminants, the pulse width of the output voltage can be varied
between 0.1% and 99.5% by means of two digital coding switches in 255 steps
Technical data
Type designation:
BZ893T 36V
 Standards
The product is manufactured in accordance with the following standards:
ISO 9001:2008
Electronic equipment used on rolling stock: EN50155
Electromagnetic compatibility: EN50121-3-2
Isolation: EN50124-1
Shock and vibration: EN50155/EN61373
Fire protection according to EN 45545
The standards applicable to this product are dependent on the version available at the time of development.

Operating Voltage
Nominal voltage:
No load idle current:

36VDC (version also available: 36VDC)
Tolerance according to railway standard: -30% +25%
45mA
Output
Signal Output:
Frequency:
Output load:
Current switch off at:
Short circuit max:
Protection circuit:
Pulse width modulated signal; Amplitude = operating voltage
240 ... 260 Hz
max. 12W
ca. 0,5A
ca. 1,5A
Transzorb diodes and overload switch off protection
Created:
27.06.2008
Modified:
Index:
File: BZ893T_36V_e_kd.doc
BZ893T
PWM / LED Bulb dimmer 36VDC
Page: 2/4
B + Z Elektronik AG
We reserve all rights to this document and the object described therein. Any reproduction, disclosure to third parties, or any
other utilization of this document is prohibited without our express permission. © B+Z Elektronik AG
Diagnostic relay contact:
Normally closed contact, opens at overload mode. Normal
mode = closed (N.C.)
Max. contact load:
0,7A / 45VDC
Mechanical data
Measures (WxHxD):
Weight:

22.5x85x120mm
ca. 120g
Materials
Housing:
PCB:
Plastic
Epoxy resin
Mounting:
Connector type:
Horizontal on T standard rail 35mm, (EN-50022-35)
8-pin single row terminal strip, WAGO
Label on housing:
1,2
3,4
5
6
7
8
+24V
(connected internal)
0V
(connected internal)
Diagnose contact
Diagnose contact
Output PWM-Signal
(not used)
Other conditions

Climatic conditions
Environment temperature:
Humidity :
-40C bis +60C Class T3
max 90% rF, at30C, non condensing.
 Disposal
According to local regulations
Created:
27.06.2008
Modified:
Index:
File: BZ893T_36V_e_kd.doc
BZ893T
PWM / LED Bulb dimmer 36VDC
Page: 3/4
B + Z Elektronik AG
We reserve all rights to this document and the object described therein. Any reproduction, disclosure to third parties, or any
other utilization of this document is prohibited without our express permission. © B+Z Elektronik AG
Connection / Wiring diagram
36VDC
1
2
Overload protection circuit
5
F
"Roughly"
6
0
7
PWM-Signal
F
PWM
"Fine"
0
3
0V
4
5; 6 = Diagnostic contact (Normal = closed)
7 = PWM Signal Output
Measures / mounting
"Fein"
0
"Grob"
BZ882T-36V
BZ882T-36V
0
24VDC
1
2
Überstrom - Abschaltung
5
8
F
"Grob"
6
7
6
PWM
"Fein"
7
85
0
F
0
5
0V
4
3
4
3
5; 6 = Diagnose-Kontakt (Normalbetrieb: geschlossen)
7 = Leistungs - Output, PWM getaktet
1
1
2
172
22.5
118
Created:
27.06.2008
Modified:
Index:
File: BZ893T_36V_e_kd.doc
Geprüft:
Geprüft:
BZ893T
PWM / LED Bulb dimmer 36VDC
Page: 4/4
B + Z Elektronik AG
We reserve all rights to this document and the object described therein. Any reproduction, disclosure to third parties, or any
other utilization of this document is prohibited without our express permission. © B+Z Elektronik AG