Bosch DS7461i User manual

Installation manual

for the

DS7461i Single Zone Input Module

1.0 Description

The DS7461i is a Single Zone Input Module designed to operate with compatible multiplex systems. It provides a supervised input

zone for connection of conventional normally open or normally closed inputs. Each DS7461i occupies one multiplex zone address on

the system. The DS7461i connects to the DS7430, DS7436 Multiplex Expansion Modules or the D8125MUX Multiplex Expansion

Module. For additional DS7461i installation information, refer to the D9412GV2/D7412GV2 Approved Applications Compliance Guide

(P/N: F01U003639).

2.0 Specifications

•Voltage: 12 VDC nominal

•Current : 0.5 mA maximum

•Line Impedance:

Maximum Impedance: 4.05Ωat +68°F (+20°C) nominal

Maximum Distance Size

250 ft 22 AWG

600 ft 18 AWG

76 m 0.65 mm

193 m 1.02 mm

Fire applications require 18 AWG.

•Operating Temperature Range: +32°F to +122°F (0°C to +50°

•Relative Humidity: 0to93%

•Signaling Line Circuit: Class B

•Initiating Circuit: ClassB

When used in a fire system, NFPA 72 prohibits this product from sharing a communications bus with non-fire devices.

3.0 Programming

Refer to the control panel's installation guide for multiplex zone (point) programming information.

Refer to Section 6.0 on page 3 for switch settings.

4.0 Installation

After any programming or hardware change, do a functional test of the system as required by local codes.

These instructions assume that the control panel is installed and in proper working condition.

The control panel must be programmed and the DS7461i address switches must be set for the DS7461i to operate.

• Program the control panel as described in the control panel's reference guide.

Disconnect power to the control panel before routing wires to connect the DS7461i.

Page 2 © Bosch Security Systems B.V., 2020 DS7461i Installation Guide

• Remove the cover of the DS7461i. Press in and up with your thumb and nail directly above the lip of the DS7461i (refer to Figure 1).

Figure1:RemovingtheCover

• Remove the DS7461i circuit board from the base. Press the circuit board retainer tab and pull the circuit board up and out of the base

(refer to Figure 2).

Wire

Entrance

Terminal Strip

Circuit Board

Retainer Tab

Reed Switch

Address

Switches

1 2 3 4 5 6 7 8

Tamper

Switch

Figure2: Removing the PCB

Handle this and all circuit boards carefully. Hold the board by its edges.

• Route the wiring through the wire entrance of the DS7461i base.

• Mount the DS7461i base to the mounting surface using the supplied screws.

• Return the DS7461i circuit board to the base.

5.0 Wiring DS7461i Terminals Description

Bus + Positive Multiplex Input

Bus - Negative Multiplex Input

1 Input Zone Positive Input

G Input Zone Ground

Table 1: DS7461i Terminal Descriptions

• Connect wiring to the DS7461i as shown in Figure 3 and Figure 4.

• Input zones are designed to monitor Normally Open or Normally Closed dry contacts. They are supervised using 47K ohm end-of-

line resistors.

The protection zone can be used as a magnetic contact by mounting a magnet iwith the reed switch and removing the EOL

resistor for the protection zone. The protection zone cannot be used as a magnetic contact and used to monitor other

contacts at the same time.

• If the reed switch is not being used, cutting it from the DS7461i circuit board prevents possible tampering to override Zone 1

operation.

• For fire installations, order Multiplex Fire Zone EOL P/N 28010 in the quantity needed.

The input zones are power limited and supervised.

When used in fire applications, Normally Open contacts must be used on the input zones.

DS7461i Installation Guide © Bosch Security Systems B.V., 2020 Page 3

5.1 DS7430 Multiplex Expansion Module Wiring

Note: Do not loop wires around the terminals.

DS7461i

Ground

Zone 1+

Multiplex Bus -

Multiplex Bus +

DS7430

Power Bus

N/C

N/O

Use 47K ohm EOL P/N:26069

for non-fire applications.

Use 47K ohm EOL P/N:28010

for fire applications.

Alarm Contact

(Normally Open or

Normally Closed)

Figure 3: Wiring to a DS7430 Multiplex Expansion Module

5.2 DS7436 Multiplex Expansion Module Wiring

DS7461i

Ground

Zone 1+

Multiplex Bus -

Multiplex Bus +

DS7436

N/C

N/O

Use 47K ohm EOL P/N:26069

for non-fire applications.

Use 47K ohm EOL P/N:28010

for fire applications.

Either Bus A or Bus B,

or both, may be used. Refer

to the panel’s reference guide.

PWR+ PWR- BUS+ BUS- PWR+ PWR- BUS+ BUS-

Figure 4: Wiring to a DS7436 Multiplex Expansion Module

5.2 D8125MUX Multiplex Expansion Module Wiring

D8125 Multiplex Module

POWERA MUX BUS A POWER B MUX BUS B

+- +- + - +-

Either Bus A or Bus B,

or both, may be used. Refer

to the panel’s reference guide.

DS7461i

Ground

Zone 1+

Multiplex Bus -

Multiplex Bus +

N/C

N/O

Use 47K ohm EOL P/N:26069

for non-fire applications.

Use 47K ohm EOL P/N:28010

for fire applications.

Alarm Contact

(Normally Open or

Normally Closed)

Figure 5: Wiring to a D8125MUX Multiplex Expansion Module

6.0 Switch Settings

Set the address switch settings before connecting the DS7461i to the multiplex bus.

No two DS7461i Single Zone modules may be set to the same address. Having

two or more units set to the same address may prevent fault detection or cause

multiplex bus failure.

You can find the Address Switch Settings using the chart on the last page,

or by calculating the decimal number of the address.

Binary Switch Values (Point 17 shown)

N1234 56 78

128 64 32 16 8 4 2 1

The DS7400 Series control panels cannot be programmed for zone (point) addresses 001-008.

In the switch

settings chart

= ON

Address

Switches

1 2 3 4 5 6 7 8

001

002

003

004

005

006

007

008

009

010

011

012

013

014

015

016

017

018

019

020

021

022

023

024

025

026

027

028

029

030

031

032

033

034

035

036

037

038

039

040

041

042

043

044

045

046

047

048

049

050

051

052

053

054

055

056

057

058

059

060

061

062

063

064

1 2 3 4 5 6 7 8

ZONE

(POINT)

ADDRESS SWITCH NUMBER

= SWITCH ON

(CLOSED)

065

066

067

068

069

070

071

072

073

074

075

076

077

078

079

080

081

082

083

084

085

086

087

088

089

090

091

092

093

094

095

096

097

098

099

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

1 2 3 4 5 6 7 8

ZONE

(POINT)

ADDRESS SWITCH NUMBER

= SWITCH ON

(CLOSED)

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

1 2 3 4 5 6 7 8

ZONE

(POINT)

ADDRESS SWITCH NUMBER

= SWITCH ON

(CLOSED)

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

1 2 3 4 5 6 7 8

ZONE

(POINT)

ADDRESS SWITCH NUMBER

= SWITCH ON

(CLOSED)

Torenallee 49, 5617 BA Eindhoven, Netherlands

2020.04

DS7461i Installation Instructions

P/N: F01U071298-04Page 4

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