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Baldwin Boxall B81R, B41R Operating instructions

  • Hello! I've reviewed the operating instructions for the Baldwin Boxall B41R, B41RB, B81R, and B81RB relay sets. This document describes how to install and use these devices to manage audio distribution across multiple zones. This includes information about wiring, configuration options like speech/music diversion and single/dual amplifier setups, as well as technical specifications for the devices. I'm ready to answer your questions about these relay sets.
  • What is the main purpose of the B41R and B81R relay sets?
    How many zones can the B41R control?
    How many zones can the B81R control?
    What voltage is required to operate the relays?
    What's the difference between B41R and B41RB?
Baldwin Boxall Communications Ltd.
Wealden Industrial Estate, Farningham Road
Crowborough, East Sussex, TN6 2JR
Telephone: 01892 664422 Fax: 01892 663146
Website: www.baldwinboxall.co.uk
Email: mail@baldwinboxall.co.uk
IB41R
Issue 2 26/10/1998
B41R and B81R
Operating Instructions
- 2 - Issue 2
B41R and B81R Relay Sets
When installing a multi loudspeaker zone system it is necessary to use a relay unit to route the paging
or background music through to the relevant zones. The B41R and B81R are designed to be operated
by our BDM204, 208 and 216 multizone paging microphones. The B41R will control 4 zones and the
B81R will control 8 zones. If more than 8 zones are needed, use multiples of the units. The relays
need 24VDC to operate them. This supply will normally be obtained from the amplifier.
The B41R and B81R are each available in two versions. When supplied as a printed circuit board for
fitting into a rack they are designated B41R and B81R. They are also supplied in a mild steel
enclosure and are then known as B41RB and B81RB.
Order Code Numbers are:
B41R 4 way less box for incorporation into racks.
B41RB 4 way in enclosure.
B81R 8 way less box for incorporation into racks.
B81RB 8 way in enclosure.
The B41R and B81R Relay Switching Sets can be used in a variety of different ways to route paging
announcements and background music to a maximum of 4 or 8 loudspeaker lines (Max current
capacity per relay 5A ie 500 Watts @ 100V).
A) Speech/Music Diversion Application
The B41R can be used in a single amplifier installation to divert speech only to one zone and
background music only to another, simply by wiring the units as shown in Figure 2.
B) Single Amplifier Paging and Music Application
The B41R wired as figure 3 will interrupt background music and broadcast a paging announcement in
any pre-selected zone via a zoned microphone. The disadvantage of using one amplifier is that
unselected zones will loose BGM and will be silent for the duration of the message.
C) Dual Amplifier Paging and Music Application
On a larger system where two amplifiers are used, one amplifier is dedicated to speech and the other
for background music. The B41R wired as Figure 4 will interrupt background music and broadcast a
paging announcement in any preselected zone, via a zoned microphone such as the BDM204, 208 or
BDM216.
- 3 - Issue 2
ZONE 1
ZONE 2
ZONE 4
ZONE 3
ZONE 1 SELECT
ZONE 4 SELECT
ZONE 3 SELECT
ZONE 2 SELECT
J4
ZONE 1
ZONE 2
ZONE 4
ZONE 3
ZONE 5
ZONE 6
Figure 1a - B41R/B Connection Drawing Figure 1b - B81R/B Connection Drawing
TO 100V LINE LOUDSPEAKERS
BACKGROUND MUSIC WILL NORMALLY BE FED
IF B.G.M. IS NOT REQUIRED IN A ZONE, REMOVE
REQUIRED IN ZONE 2, REMOVE BOTH RED LINKS.
PAGING WILL STILL BE BROADCAST TO ALL AREAS.
INTO N/C AND PAGING FED INTO N/O.
BOTH SAME COLOURED LINKS. EG. B.G.M. NOT
LINK WIRE COLOUR
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
MAUVE
GREY
ZONE
1
2
3
4
5
6
7
8
+24V
DIV
GROUP 1
GROUP 2
ZONE 8 SELECT
ZONE 7 SELECT
ZONE 6 SELECT
ZONE 5 SELECT
ZONE 1 SELECT
ZONE 4 SELECT
ZONE 3 SELECT
ZONE 2 SELECT
J4
J3
J2
J1
+24V
DIV
GROUP 1
GROUP 2
N/C
N/O
SW
N/C
N/O
SW
ZONE 8
ZONE 7
TO 100V LINE LOUDSPEAKERS
RL9
RL4
RL3
RL2
RL1 RL1
RL2
RL3
RL4
RL5
RL6
RL7
RL8
RL9
FROM AMP OUTPUT
OUTPUT
FROM AMP
B41R
+24V
MUSIC & PAGING
PAGING
BGM
Taken to 0V when
paging mic. is active DIV
N/C
Figure 2 - Speech/Music Diversion Application Using the B41R/B
- 4 - Issue 2
B41R
+24V
N/C
N/O
DIV
Figure 3 - Single amplifier, four zone system
4
3
2
1
ZONE 1
ZONE 2
ZONE 3
ZONE 4
B41R
+24V
N/C
N/O
DIV
BDM204
4
3
2
1
Figure 4 - Two amplifier, Paging and Music application
SW
ZONE 1
ZONE 2
ZONE 3
ZONE 4
- 5 - Issue 2
RL9
5A 2P/CO
D25 1N4002 RL9
5A 2P/CO
NORMALLY CLOSED
NORMALLY OPEN AMPLIFIER OUTPUT
SWITCHED
+24V
DIV
GROUP 1
GROUP 2
4
3
ZONE
SELECT
J4
2
1
D11 1N4002
D12 1N4002
RL3
5A 2P/CO
RL4
5A 2P/CO
D10 1N4002
YELLOW RL4
5A 2P/CO
LOUDSPEAKER CIRCUITS
LINE ZONE 4
LINE ZONE 3
ORANGE
RL2
5A 2P/CO
RL3
5A 2P/CO
RED
RL2
5A 2P/CO
D7 1N4002
D5 1N4002
D8 1N4002
D9 1N4002
D2 1N4002
D3 1N4002
D6 1N4002
RL1
5A 2P/CO
D1 1N4002
D4 1N4002
RL1
5A 2P/CO
BROWN
LINE ZONE 2
LINE ZONE 1
FROM
Figure 5 - B41R and B41RB Circuit Diagram
TO 100V LINE
RL9
5A 2P/CO
D25 1N4002
NORMALLY CLOSED
NORMALLY OPEN AMPLIFIER OUTPUT
LINE ZONE 8
LINE ZONE 7
SWITCHED
RL9
5A 2P/CO
RL8
5A 2P/CO
D22 1N4002
D23 1N4002
D24 1N4002
+24V
DIV
GROUP 1
GROUP 2
8
7
6
5
4
ZONE
SELECT
D20 1N4002
D21 1N4002
RL6
5A 2P/CO
RL7
5A 2P/CO
D19 1N4002 RL8
5A 2P/CO
GREY
RL7
5A 2P/CO
RL6
5A 2P/CO
MAUVE
BLUE
RL5
5A 2P/CO
D13 1N4002
D16 1N4002
D14 1N4002
D15 1N4002
D17 1N4002
D18 1N4002
3
J4
2
1
J1
J2
J3
D11 1N4002
D12 1N4002
RL3
5A 2P/CO
RL4
5A 2P/CO
D10 1N4002
GREEN
YELLOW RL4
5A 2P/CO
RL5
5A 2P/CO
LINE ZONE 6
LINE ZONE 5
LOUDSPEAKER CIRCUITS
LINE ZONE 4
LINE ZONE 3
ORANGE
RL2
5A 2P/CO
RL3
5A 2P/CO
RED
RL2
5A 2P/CO
D7 1N4002
D5 1N4002
D8 1N4002
D9 1N4002
D2 1N4002
D3 1N4002
D6 1N4002
RL1
5A 2P/CO
D1 1N4002
D4 1N4002
RL1
5A 2P/CO
BROWN
LINE ZONE 2
LINE ZONE 1
FROM
TO 100V LINE
Figure 6 - B81R and B81RB Circuit Diagram
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