Samlexpower Evolution EVO-2212 Owner's Manual page 126

SECtION 4 |
The Normally Open "NO" and "Common" contacts of Status Relay (14, Fig 2.1 in the EVO
Manual) can be used to also automatically start and stop generator through appropriate
external Generator Auto Start / Stop Module. 3 options (Functions 2, 3 and 4) explained below
are available for carrying out this function depending upon user requirements. The "Common"
and "NO" terminals are wired to the optional Generator Auto Start / Stop Control Module
which, in turn, is wired to the Remote Start / Stop connections on the Generator. The AC
output terminals of the Generator are wired to the Generator Input Terminals on the EVO (7, 8,
9 in Fig 2.3) For installation details, please refer to Section 3.15 / Fig 3.13 and Section 3.16 /
Fig 3.14 in the EVO Manual
Based on the Generator Start Logic contained in of one of the selected Functions 2, 3 or
4 explained below, the Status Relay will be switched ON (energized), its "Common" and
"NO" contacts will close and the external Generator Start / Stop Control Module will initiate
automatic starting of the Generator. Once the Generator has started and starts feeding AC
output to EVO (within the programmed limits of voltage and frequency), the EVO will be
synchronized with the Generator and once synchronization is completed, the load will be
transferred instantly (within 1 ms) to the Generator at Zero Crossing of the voltage waveform
for seamless transfer and for better protection of Transfer Relay contacts. The EVO will now
operate in "Charging Mode" with the AC power from the Generator charging the batteries as
well as providing power to the AC load(s).
Based on the Generator Stop Logic contained in one of the selected Functions 2, 3 or 4
explained below, the Status Relay will be switched OFF (de-energized), its "Common" and
"NO" contacts will open and the external Generator Auto Start Control Control Module will
initiate automatic stopping of the Generator. When AC output of the generator is shut down,
the EVO will automatically transfer the AC load(s) to the "Inverter Section" within 16 ms.
Relay Functions 2, 3 and 4 related to automatic starting and stopping of generator are
explained below:
2= Generator 0 (this is the Default Function):
This Function will start the Generator at "LOW VOLT ALARM" and stop the Generator when
the batteries are fully charged till completion of 3-Stage Charging Cycle.
• I f the battery voltage drops to "LOW VOLT ALARM" [(i) for 12V: 9.5V – 12.5V / Default 11.0V
(ii) for 24V: 19.0V – 25.0V / Default 22.0V] or lower for continuous period = "GS DETECT
TIME" (0-600 sec; Default 10 sec), the Status Relay will be energized. "Common" and "NO"
contacts of the Status Relay will close to initiate automatic starting of the Generator
• O nce the generator has started and starts feeding AC output (within the programmed
limits of voltage and frequency), the EVO will change over from "Inverting Mode" to
"Charging Mode". Battery charging will be initiated as per full and complete 3-Stage
Charging Algorithm ("CHARGE MODE" 0=Normal).
34 | SAMLEX AMERICA INC.
Parameter Setup
APPENDIX A