2-13
Main system supply (MSS), continued
MSS
specifications
Tables 2-15 and 2-16 list the battery current draw for the MSS. The assumed voltage is
24 VDC, which is rated battery voltage for lead-acid type batteries.
Note: 1. Additional standby conditions: Auxillary relay activated, power trouble LED on, battery charger off,
auxiliary power load = 0 mA.
2. Additional alarm conditions: Auxillary relay activated, power trouble LED on, battery charger off,
auxiliary power load = 0 mA, NAC alarm load = 0 mA, IDNet = 35 V.
3. Notification power must also be taken into account for alarm current. Consult the notification
appliances, used installation manuals to determined the current draw for each appliance used.
The notification appliance circuits on the MSS are rated for special application and for
regulated 24 VDC operation per UL864, 9th Edition.
When used with the notification appliances listed in Table C-1 (Appendix C) or Table D-1
(Appendix D), each NAC is rated for 3 A, and total MSS capacity is rated at 8 A. This rating is
the UL864 special application rating. Appliances listed in Tables C-1 or D-1 are synchronized
per UL864 between all NACs on the MSS, and any NACs on a MSS or 4009As within the
same 4010ES system.
When using notification appliances not listed in Tables C-1 or D-1, each circuit is rated for 2 A
maximum, with a total notification appliance load of 4 A per MSS. This rating is the UL864
regulated 24 VDC rating. Synchronization of strobes and other appliances requires use of the
associated, listed, compatible synchronization module. Consult the supplier of notification
appliances for synchronization limits and details.
Simplex appliances (Table C-1) may not be mixed with Wheelock appliances (Table D-1) on a
single power supply. A 4010ES system with mix of appliances from Tables C-1 and D-1 will
not meet the UL864 9th Edition requirement for visual synchronization (10 milliseconds)
between power supplies. Appliances listed in Table C-1 will be consistently out of visual sync
with appliances in Table D-1 by about 30 milliseconds. Appliances listed Table C-1 will be
notably out of audible sync with appliances in Table D-1 by a consistent time, Wheelock
leading by 1/2 second. In order to meet the requirements for visual and audible sync system
wide, all appliances in the system must be exclusively from either Table C-1 or D-1. Non-
pulsing, linear-type notification appliances, such as horns or bells may be used up to the full
rating (3 A/NAC, 8 A total for the MSS).
Table 2-15. MSS with IDNet current specifications
Standby conditions (Note 1)
Current
(battery standby 24V)
Current
(max)
No alarms (NACs normal); TBL relay activated; IDNet LED ON, No IDNet devices connected 140 mA 190 mA
Add to above for each additional set of 50 IDNet devices in standby 40 mA
Total current for fully loaded IDNet channel (248 devices) in standby 339 mA 450mA
Alarm conditions (Note 2)
Current
(battery standby 24V)
Current
(max)
4 NACs ON (Note 3); TBL Relay Activated; IDNet LED ON, No IDNet devices connected 165 mA 220 mA
Add to above for each set of 50 IDNet devices in alarm 50 mA
Add to above for 20 LEDs ON 40 mA
Total current for a fully loaded IDNet channel (248 devices) in alarm (20 LEDs ON) 453 mA 600 mA
Table 2-16. MSS without IDNet current specifications
Standby conditions (Note 1)
Current
(battery standby 24V)
Current
(max)
No Alarms (NACs normal); TBL Relay activated 70 mA 110mA
Alarm Conditions (Note 2)
Current
(battery standby 24V)
Current
(max)
4 NACs ON (Note 3); TBL Relay activated 100 mA 150 mA
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