ComAp InteliATS PWR, Справочное руководство

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InteliATS
NT
PWR, SW version 2.5, ©ComAp
– May 2015
34
IA-NT- PWR-2.5-Reference Guide.pdf
AMF + no battery operation
G
IA-NT
GCB
3x
LOAD
3
x
U
M
3
x
U
G
MCB
3x
T
3x
K4
MCB GCB
3x
MCB CLOSE/OPEN
GCB CLOSE/OPEN
BO
MCB
K3.1
GCB
K2
K3.2
K1
+24V/2.5A
=
˜
GEN START/STOP
K2
Specification
It is possible to operate controller without a battery supplying the controller. For such operation the
following conditions have to be fulfilled:

Controller is supplied from 24V/2.5A AC/DC power supply whose source is switched between
Mains and Gen-set via relay (another contacts of the relay for GCB switching) according to
the Mains state (OK/Fault). See the schematic diagram for more details

Normally closed relay contacts have to be used for the gen-set start command. Setpoint
“GenStart Logic” has to be set to CLOSE-OFF

Switching of the 24V AC/DC power supply is blocked when GCB is closed, so the power
supply is not switched to Mains if voltage on the mains bus appears
– protection against
“Flip-flopping” of the power supply when voltage changes arise on Mains.
It (power supply) will be switched to Mains when GCB is opened.
Then in the case of Mains failure:

24V AC/DC power supply source is switched to gen-set

Voltage supplying controller disappears

Gen Start relay is deenergized and contacts closed

Gen-set is started

Controller is supplied from running gen-set

Controller is initialized, waits for Gen OK conditions

MCB is opened, GCB closed and the 24V AC/DC power supply source is locked in gen-set
position.
If Mains returns:

GCB is opened, 24V AC/DC power supply source is unlocked and switched to Mains

MCB is closed

Gen-set is stopped
Hardware requirements
1x IA-NT PWR
1x 24V/2.5A AC/DC power supply