Appendix G: Specifications

This appendix provides electrical and environmental specifications for the XT+ Extinguishant Control Panel. Current levels provided in the tables of this appendix are maximum ratings unless otherwise indicated.

Operating Constraints

Installation of the XT+ Extinguishant Control Panel must include the operating constraints of the system to maintain continuous signal monitoring and reporting. Operating constraints are based on the current-driving capability of the panel while maintaining external loading caused by devices and cabling.

External loading must be selected within the limits of the XT+ Extinguishant Control Panel to provide continuous operation. External loading is caused by individual or multiple combinations of Signaling Line Circuits, Notification Appliance Circuits, and Initiating Devices. It is also caused by the size and length of cabling connections. Refer to Calculations to determine the appropriate size and length of cabling.

Electrical

AC Input Ratings

Terminal	Description	Power Supply	Power
L	AC line	5.25 A	1.83 Amps Max @ 115 V, 50/60 Hz 0 .915 Amps Max @ 230 V, 50/60 Hz
L	AC line	10.25 A	2.5 Amps Max @ 115 V, 50/60 Hz 1.25 Amps Max @ 230 V, 50/60 Hz
N	AC neutral
W	Ground

AC line and AC neutral terminals are supervised for open and short circuits, provided standby batteries are functional.

Power Supply

Fuses

Power Supply	Description
5.25 A	AC Input, 3 A, 250 VAC, slow blow, 5 x 20 mm
10.25 A	AC Input, 5 A, 250 VAC, slow blow, 5 x 20 mm

24 VDC Output Ratings

Designation	Description
Output voltage	22V DC minimum, 26.4V DC maximum
Ripple Voltage	1 V Maximum
Maximum Standby Current	Rated maximum output current which can be supplied continuously in normal standby.
S406 5.25A Power Supply	1.9 A
S408 10.25A Power Supply	3.4 A
Maximum Alarm Current	Rated maximum output current which can be supplied in alarm.
S406 5.25A Power Supply	4 A
S408 10.25A Power Supply	8 A

Standby Battery Ratings

Designation	Description
AH max	Maximum battery capacity in amp hours for 5.25 A and 10.25 A Power Supplies
5.25 A	60 AH maximum
10.25 A	100 AH maximum
Ri max	Maximum series resistance in battery charging circuit before a trouble is indicated.
5.25 A	1 Ohm
10.25 A	0.4 Ohm

Ground Trouble Indication

A ground trouble indication occurs on the XT+ Extinguishant Control Panel when 30K Ohms or less exists between the ground and either DC RTN or +24 VDC of the power supply.

System Power

When AC power is present, the system operates entirely from AC power (primary). During an AC power failure, the entire system load is transferred to the standby batteries (secondary).

Standby and Alarm Current

Standby and Alarm Currents of the XT+ Extinguishant Control Panel with two loops are provided below. Two loop operation includes System A Panel Module, System B Panel Module, and the Dual Loop Panel Module. Two loop operation represents the minimum board configuration of the XT+ Extinguishant Control Panel. The data excludes all external loads. Primary loads assume a fully charged battery.

5.25 A Power Supply

Standby Load (mA)	Alarm Load (mA)	Description
244 mA @ 115 VAC	272 mA @ 115 VAC	Line current for standby and alarm when battery charge current is less than 30 mA.
162 mA @ 230 VAC	177 mA @ 230 VAC	Line current for standby and alarm when battery charge current is less than 30 mA.
560 mA @ 24 VDC	650 mA @ 24 VDC	Battery current for standby and alarm when AC power failure condition is present.

10.25 A Power Supply

Standby (mA)	Alarm (mA)	Description
220 mA @ 115 VAC	234 mA @ 115 VAC	Line current for standby and alarm when battery charge current is less than 30 mA.
176 mA @ 230 VAC	181 mA @ 230 VAC	Line current for standby and alarm when battery charge current is less than 30 mA.
550 mA @ 24 VDC	620 mA @ 24 VDC	Battery current for standby and alarm when AC power failure condition is present.

The data provided above for standby and alarm current includes loads of a two loop fire control panel alone and excludes current loads from external devices or equipment.

Battery

Rechargeable Standby Battery Circuit

Designation	Description
Standby Battery Type	Two 12 VDC, rechargeable, valve-regulated, lead-acid batteries wired in series
Charger Type	Temperature compensated, current limited float charger
Low Battery Disconnect Voltage	19 V (+/- 1 volt)
Standby Battery Capacity	Installation-dependent. Refer to Determining the Standby Battery Capacity to determine the amp hour rating of the standby batteries.
Standby Battery Charge Voltage	27.6 V nominal, temperature-compensated and current-limited
Charge Current	Maximum charging current of standby batteries.
5.25 Amp Power Supply	1.25 A
10.25 Amp Power Supply	2.25 A

Standby Battery Loads

Standby battery loads are generated by measuring the series battery current of the power supply following a power failure condition. Standby and alarm current of the XT+ Extinguishant Control Panel can include all or part of the following loads:

Loads	Standby Current	Alarm Current
5.25 A Power Supply	78 mA	78 mA
10.25 A Power Supply	80 mA	80 mA
Dual Loop Panel Module	115 mA	115 mA
NAC Outputs	0 mA (per output)	2500 mA (per output)
XT+ Extinguishant Control Panel *	350 mA max	450 mA max
XT+ Extinguishant Control Panel *	335 mA typical	435 mA typical
Zone LED Module	5 mA	5 mA + 3 mA per LED
XT+ Network Module	80 mA	80 mA
XT+ Printer	0 mA	1500 mA (only during printing)
* LCD Main Processor Board, Main Back Board, System A Panel Module, System B Panel Module

Cabling

Specify cabling that meets or exceeds NFPA 72 and UL 864 guidelines.

Cable Maximum Parameters for Network

Property	Ratings
Resistance	100 Ω total for both conductors
Core to Core Capacitance	300 nF
Core to Screen Capacitance	450 nF
Inductance Per Core	600 µH

RS-485 Serial Data and Terminal Capacity

Property	Description
Serial Data Connection	up to 3900 feet of 18/2 FPLR
Maximum Terminal Capacity	14 AWG
Cable Maximum Parameters	25 Ω per conductor, 600 µH per conductor, 300 nF

SLC Loop Ratings

The following ratings represent Hochiki DCP Protocol SLC loops of the XT+ Extinguishant Control Panel.

Connection	Rating
LOOP ( - OUT ), ( + OUT )	36 V DC @ 400 mA
LOOP ( - IN ), ( + IN )	36 V DC @ 400 mA

Maximum Cable Capacitance: 1 µF

Maximum Wiring Voltage Loss: 6.4 V

Refer to SLC Loop Cabling for maximum allowable cable length calculations.

Main Back Board

NAC Outputs

NAC Outputs	Terminal
NAC 1	( + ), ( - )
NAC 2	( + ), ( - )
NAC 3	( + ), ( - )
NAC 4	( + ), ( - )

NAC 1 and 2 can be configured to provide one Class A circuit (NAC 1&NAC 2) or two Class B circuits (NAC 1 and NAC 2).

NAC 3 and 4 can be configured to provide one Class A circuit (NAC 3&NAC 4) or two Class B circuits (NAC 3 and NAC 4).

Each NAC circuit, whether Class A or Class B, has the following ratings:

AUX Power Output Range	Channels configured to power non-NAC devices are rated special application 20V - 26.4V at 2A max, power-limited. Refer to NAC Power Output Modes for compatible devices.
Quiescent Current Consumption	30 mA
Maximum Current Consumption	50 mA (exclude current draw on outputs)
Current per NAC Output	2.5 A per channel, power-limited
Fuse (Electronic)	Average Current Limit: 1 to 2.5 A, programmable Peak Current Limit: 3.0 A, fixed per channel
Supervision	Reverse-polarity
End-of-Line Device	Diode (S2029)
Short Circuit Threshold	130 Ohms +/- 20%
Maximum Line Impedance	4V loss (load-dependent)

Regulated NAC Outputs

NAC outputs operate in a regulated mode when conforming to specific levels of continuous or pulsed DC. NAC outputs meet requirements for regulated levels when the output current does not exceed the constraints described below.

Regulated Non-Pulsing Output Current

Currents cannot exceed 2.5A from any single NAC output:

Combined currents of all four NAC outputs cannot exceed 5A

System must not exceed maximum power supply output rating.

Regulated Pulsing Output Current

5.25A Power Supply - Regulated pulsing DC output = Max 500mA total across all NACs

10.25A Power Supply - Regulated pulsing DC output = Max 600mA from any NAC output, Max 2.4 A per Board

System must not exceed maximum power supply output rating.

Refer to Specifications for operating NAC outputs in the regulated mode.

Special Application NAC Outputs

NAC outputs can operate in a special application mode. NACs configured for special application have specific loading limitations, as detailed below.

Manufacturer	Maximum No. of Devices per Channel	Maximum Current Draw per Channel	Power Supply	Maximum Current Draw Across All NACs¹
Amseco	27	2.4A	S406 5.25A	2.5A
Amseco	27	2.4A	S408 10.25A	5A
Gentex	32	2.5A	S406 5.25A	2.5A
Gentex	32	2.5A	S408 10.25A	5A
System Sensor	20	1.32A	S406 500’S	2.1A
System Sensor	20	1.32A	S408 10.25A	5A
Wheelock	41	2.5A	S406 5.25A	2.5A
Wheelock	41	2.5A	S408 10.25A	5A

¹ When System Sensor is used in combination with any other manufacturer, the 2.1A limit applies across all NACs.

Refer to Specifications for operating NAC outputs in the special application mode.

AUX 24V

Terminal	Rating
AUX 24V (1) OUT ( + ) and ( - )	Regulated 24 VDC @ 900 mA
AUX 24V (1) RTN ( + ) and ( - )	Supervision only. Not an output.
AUX 24V (2) OUT ( + ) and ( - )	Regulated 24 VDC @ 900 mA
AUX 24V (2) RTN ( + ) and ( - )	Supervision only. Not an output.

Relay Ratings

Terminals	Connection	Ratings
(NO), (C), and (NC)	TROUBLE RELAY	Volt-free, Form C contacts 30V DC @ 1 A maximum, Resistive Programmable ACTIVE during complete power loss Not supervised
(NO), (C), and (NC)	FIRE RELAY SUPERV RELAY PROG 1 RELAY PROG 2 RELAY	Volt-free, Form C contacts 30V DC @ 1 A maximum, Resistive Programmable INACTIVE during complete power loss Not supervised

Network (RS-485)

Terminal	Rating
W	Ground for cable shield (if applicable)
( + ), ( - ) IN	Data 3.3 V, current-limited
( + ), ( - ) OUT	Data 3.3 V, current-limited

RS-485 I/O

Terminal	Rating
W	Ground for cable shield (if applicable)
( + ), ( - ) IN	Reserved for future use.
( + ), ( - ) OUT	Data 3.3 V, current-limited

The RS-485 I/O utilizes standard RS-485 signaling in multi-drop mode with 120 Ohm terminations.

Fire Routing Output 1

Reserved for future use.

Prog Inputs

Terminals	Rating
1, 2, 3	Supervision: None Open Circuit Voltage: 24 VDC Activation: Short to 0V terminal (< 100 ohms) Activation current: 3.3 mA typical

Fire Routing Input

Supervised input to receive confirmation signal from fire routing equipment. Reprogrammable for any input event type.

Terminals	Rating
( + ), ( - )	Supervision: Class B Open Circuit Voltage: 10V End-of-Line device: 3.3K Ohm resistor (S2063) Activation device: 680 Ohm resistor

Fire Routing Output 2

Reprogrammable for any output event type.

Terminals	Rating
( + ), ( - )	Regulated 24V DC @ 60 mA Fuse: Self-resetting Supervision: Reverse-polarity DC End-of-line device: Diode (S2029)

Prog Routing Input 1

Programmable for any input event type.

Terminals	Rating
( + ), ( - )	Supervision: Class B Open Circuit Voltage: 10V End-of-Line device: 3.3K Ohm resistor (S2063) Activation device: 680 Ohm resistor

Prog Routing Output

Terminals	Rating
( + ), ( - )	24V max. Impedance between (+) and (-) terminals measures 3.3K ohms when inactive. Impedance between (+) and (-) terminals measures 680 ohms when active.

Prog Routing Input 2