Multicrestfire alarm system

TMFQIU004-SCI

SHORT CIRCUIT ISOLATORFeatures• One simple LED for status indication• Self-restoring LED indication• Downsized unit
• Easy installation

Description
The Short Circuit Isolator (FQIU004-SCI) is used to provide additional reliability for a fire protection system by isolating a segment of an SignalingLine Circuit (SLC) in which a short circuit has occurred. This makes it possible for the remainder of the loop to provide normal monitoring functions.
FQIU004-SCI employs one red LED to indicate the status. In normal condition, the LED is deactivated. When the short circuit is happened,FQIU004-SCI will cut off the short circuit and turn on the LED.

Ordering Information
Model no. FQIU004-SCISpecifications
No.
12345678910Item
Rated voltage range of SLC input power (S+, S-)
Maximum SLC 24 VDC standby current (S+, S-)
Maximum SLC 24 VDC alarm current (S+, S-)
Internal Resistance
Wiring resistance or wiring after a SCI in Class B (style 4)
Wiring resistance or wiring between a SCI and another SCI in Class A (style6 and 7)Maximum no. of addressable device connected to a SCI
Operating temperature range
Operating humidity range
Dimensions

11

Applicable electrical box for installation

Installation
Figure 1: Installation into the compatible electrical box

Specification
22.0 to 24.0V
250µA
1.80mA0.1Ω
10Ω
10Ω
50 units
0°C to 49°C (32°F to 120°F)
0 to 93% (non-condensing)
106mm (4.17 inches) (H) × 106mm (4.17 inches) (W)× 29mm (1.14 inch) (D)North American 64mm (2-1/2 inches) deep 2-gang box
Standard 4 inches square box 38mm (1-1/2 inch) deep boxFigure 2：NFPA Class B (Style 4) Wiring Configuration
FQIU004-SCI

S+1S-1S+2S-2

Analogdetector

Addressable
moduleAddressable
moduleFQIU004-SCI

S+1S-1S+2S-2

Analogdetector

Addressable
moduleAddressable
moduleFQIU004-SCI

S+1S-1S+2S-2

Analogdetector

Addressable
moduleAddressable
moduleS+1S-1S+2S-2

PCA-2440X S508's TB1 or PCA-2442X ALE

Figure 3: NFPA Class A (Style 7) Wiring Configuration

FQIU004SCI
S+1S-1S+2S-2

NOCNO1C1

S+S+NC1

S-NO2C2FRRU004-MCM

NC2
S+1S-1S+2S-2FQIU004SCI

S+1S-1S+2S-2S-FQIU004SCILED

FRRU004-TRM4

JP1JP1B+S-

B-

24+

A+24-

A-S+S-

OUT+24+OUT-24-LED
S+1S-1S+2S-2

FQIU004SCI

S+1S-1S+2S-2

S+

FRRU004-CIZM4FQIU004SCILED

FRRU004-MOM4C1NO1S+Z1S-

C2NO2

LED
S+1S-1S+2S-2

FQIU004SCIZ2

FRRU004-DCM4Analog detector

C

S+NO

S-Z

LED

FRRU004-SCM4

S+1S-1S+2 S-2

S+1S-1S+2S-2

FQIU004SCI

S+1S-1S+2S-2FQIU004SCI

PCA-2440X S508's TB1or PCA-2442X ALE

These SCIs shall be
installed within 20
feets from TB1 ofPCA-2440X S508

NOTE
・The information contained herein does not purport to cover all the details or variations of the equipment described, nor to provide for every
possible contingency that may be met in connection with its installation, operation or maintenance.
・Specifications are subject to change without notice. Contact Nohmi before relying on the information.
・Actual performance is based on proper application of the product by a qualified professional.
・Should further information be required or should particular concerns arise that are not covered sufficiently for the purchaser’s purposes, thematter should be referred to Nohmi or your nearest distributor.

Contact• Head Office: 4-7-3 Kudan-Minami, Chiyoda-ku, Tokyo
102-8277, Japan• Phone: (81) 3 - 3265 - 0231
• F A X: (81) 3 - 3265 - 5348
URL http://www.nohmi.co.jp/english/

Catalog Number 131020Ⓓ-F-16301