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Network Wiring Ground Fault Detection

18

NOTI•FIRE•NET™ PN 50257:E 7/5/01

.

Figure 13 Point-To-Point Ground Fault Detection

If an RPT-W is employed, two ground fault detection schemes are possible within a point-to-point
configuration. One or both nodes (refer to Figure 14 and Figure 15) may provide ground fault
detection, depending on the number of repeaters and the setting of the repeater pass-through switch
(SW3) at each repeater (refer to EXAMPLES 1 and 2).

Note:

Refer to the

Network Adaptor
Module (NAM-232)
Manual when
employing the NAM-
232W in place of the
MIB-W. See Table 1
on page 6 for
document numbers.

•

EXAMPLE 1:

In this example, the node on the left provides the ground fault detection, and

thus, the node must be an AFP-200, AFP-300/AFP-400, or AM2020/AFP1010/INA with an
MPS-24A Main Power Supply. SW2 (Port B) of the MIB on the left is set to the ON position
to enable ground fault detection on Port B. The RPT-W pass-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-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.

Figure 14 Point-To-Point (EXAMPLE 1)

•

EXAMPLE 2:

By setting the pass-through switch (SW3) on the RPT-W to the OFF position,

both nodes may provide their own ground fault detection (refer to Figure 15). The left node
provides ground fault detection up to the RPT-W, and thus, must be an AFP-200/AFP-300/
AFP-400, or AM2020/AFP1010/INA with an MPS-24A Main Power Supply. SW2 (Port B) is
set to the ON position to enable ground fault detection pass-through on the left MIB-W.

The Port A switch on the right MIB-W is also set to the ON position, providing ground fault
detection pass-through up to the RPT-W. This node must also be an AFP-200/AFP-300/AFP-
400,or AM2020/AFP1010/INA with an MPS-24A Main Power Supply.

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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...

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