Notifier NOTI-FIRE-NET Скачать руководство пользователя страница 17 | Manualshive

Страница: 17 / 24

Notifier NOTI-FIRE-NET Скачать руководство пользователя страница 17

Network Wiring Ground Fault Detection

NOTI•FIRE•NET™ PN 50257:E 7/5/01

17

Network Wiring Ground Fault Detection

Since the twisted pair communication link between adjacent nodes can be isolated from the nodes
through the MIB/NAM-232 (transformer coupling), a single ground fault on one of the wires will
have no effect on circuit operation. For this reason, ground fault detection for the isolated link is
not necessary unless required by the Authority Having Jurisdiction.

Ground fault detection from a node power supply may be fed-through or disabled through switches
on the MIB-W, MIB-WF, NAM-232W, and RPT-W (refer to Figure 12). Set switch to ENABLE
for ground fault detection.

Figure 12 Ground Fault Switches

Ground fault detection may be provided by a fire panel or INA node on the network which is
powered by a Main Power Supply (MPS-24A), or an AFP-200/AFP-300/AFP-400 connected to the
network through a NAM-232.

The following paragraphs highlight ground fault detection considerations for point-to-point and bus
wire configurations. In the examples that follow, the MIB-WF or NAM-232W may be used in
place of the MIB-W.

Point-To-Point Configuration

In a point-to-point configuration without repeaters, enable ground fault detection in only one of the
two nodes. In Figure 13, the left node provides the ground fault detection, and thus, must be an
AFP-200/AFP-300/AFP-400, or AM2020/AFP1010/INA with an MPS-24A Main Power Supply.
SW2 is set to the ON position to enable ground fault feed-through detection on the left MIB-W Port
B. The corresponding Port A switch of the right MIB-W is set to the OFF position, disabling
ground fault detection feed-through from the node on the right. The node on the right can be any
network node.

SW2 corresponds to Channel B

SW1 corresponds
to Channel A

Media Interface Board

MIB-W

Media Interface Board

MIB-WF

Repeater

RPT-W

Network Adaptor Module

NAM-232-W

SW3 corresponds to
Channel B

SW2 corresponds to
Channel A

SW1
corresponds to
Channel A

SW3 is used to enable or
disable the ground fault
detection feed-through

MIBWPCC1.

MIBWPCC.

NAM232W1.

RPTWPCC1.

Technical Manuals Online! - http://www.tech-man.com

firealarmresources.com

«
...
15
16
17
18
19
...
»

Содержание NOTI-FIRE-NET

Страница 1: ...Document 50257 E 7 5 01 Rev E PN 50257 E ECN 01 146 NOTI FIRE NET Manual Technical Manuals Online http www tech man com firealarmresources com...

Страница 2: ...proper storage of flammable materials etc Heat detectors do not sense particles of combustion and alarm only when heat on their sensors increases at a prede termined rate or reaches a predetermined le...

Страница 3: ...ct AC power and batteries prior to removing or in serting circuit boards Failure to do so can damage circuits Remove all electronic assemblies prior to any drilling filing reaming or punching of the e...

Страница 4: ...ons 13 Configuration Definitions 13 Characteristic Impedance In a Point to Point Configuration 14 Characteristic Impedance In a Bus Configuration 15 Terminating Point To Point and Bus Configurations 1...

Страница 5: ...ons port The network has the ability to send acknowledge signal silence drill and reset commands to the AFP 200 or AFP 300 AFP 400 AFP 200 or AFP 300 AFP 400 zones may be used to activate other networ...

Страница 6: ...s onto the NRT NET card to complete the network interface Each NRT or NCS requires a network node address The Repeaters RPT boost data signals between network nodes extending communication distances T...

Страница 7: ...a fiber optic segment The following paragraphs detail each procedure Twisted Pair Circuits The length of cable for each segment in the system must fall within the range specified in Table 2 If the dis...

Страница 8: ...100 Low 1200 2000 N A BRAND REX 93782 01 16 AWG 1 Pair Shielded Contact Manufacturer High 1 1400 1 100 Low 1200 2000 N A Genesis GJ 854020514 14 AWG 1 Pair Shielded FPLP NEC Article 760 High 1 400 1 1...

Страница 9: ...t Number and Number of Gauges Conductors Manufacturer s Specifications Data Threshold All Nodes And Or Repeaters On A Cable Segment Permissible Single Twisted Pair Range In Feet For Each Cable Segment...

Страница 10: ...ave to travel from one end of the network to the other end refer to Figure 2 The length is influenced by the total number of MIB NAM 232 RPT devices and medium along the circuit path Refer to Figure 3...

Страница 11: ...A B C or D When employing the SIB NET a MIB W MIB WF or MIB F is required The SIB 2048A may also be used as a NOTI FIRE NET interface with the NAM 232 Initiating Devices Initiating device requirement...

Страница 12: ...to the right of the break However the fragment to the right of the break can receive information from the fragment to the left of the break Figure 5 Fiber Optic Style 4 System Break Note A wire to wi...

Страница 13: ...optic cable or mixed media wire and fiber Figure 6 Style 7 Configurations Configuration Definitions The following configurations are defined Point To Point Configuration A point to point wiring config...

Страница 14: ...r network with more than two nodes Terminating resistors are only needed for the first and last nodes of the bus configuration all other terminating resistors must be removed In a bus configuration mo...

Страница 15: ...upport point to point connections to the remaining buildings in the system Figure 9 Combination Wiring Terminating Point To Point and Bus Configurations Both point to point and bus configurations requ...

Страница 16: ...R70 These point to point circuit segments are terminated at each node repeater A bus circuit spans multiple nodes repeaters with a terminating resistor at each end of the circuit segment A point to po...

Страница 17: ...rations for point to point and bus wire configurations In the examples that follow the MIB WF or NAM 232W may be used in place of the MIB W Point To Point Configuration In a point to point configurati...

Страница 18: ...s through switch SW3 is ON allowing the left node to provide ground fault detection for the two point to point wire connections on the left and right of the repeater The Port A switch on the right MIB...

Страница 19: ...etection along the bus The primary difference is that one node can provide ground fault detection for multiple nodes along the bus refer to EXAMPLE 1 and 2 Note Refer to the Network Adaptor Module NAM...

Страница 20: ...ft separate ground fault detection circuits must be fed through The node second from the right continues to provide ground fault detection up to the RPT W Port B and must be an AFP 200 AFP 300 AFP 400...

Страница 21: ...ng with the supplied tie wrap at each end of the cylinder 4 If used repeat for the remaining twisted pair s on a MIB W second port Figure 19 Installation of the Ferrite Cylinder on the NRT NCS Install...

Страница 22: ...22 NOTI FIRE NET PN 50257 E 7 5 01 Notes Technical Manuals Online http www tech man com firealarmresources com...

Страница 23: ...ting constitutes the only warranty made by NOTIFIER with respect to its products NOTIFIER does not represent that its products will prevent any loss by fire or otherwise or that its products will in a...

Страница 24: ...World Headquarters 12 Clintonville Road Northford CT 06472 1653 USA 203 484 7161 Fax 203 484 7118 www notifier com Technical Manuals Online http www tech man com firealarmresources com...

Отзывы:

Нет отзывов