SENS MicroGenius S2/S4 Technical Manual
7
device is field replaceable.
Dead battery charge
Starts into and recharges zero volt battery without user intervention
Parallel/Load Share
operation
Two or more load-sharing chargers operate with all modes
synchronized for increased current or fault tolerance, requires
standard RJ-45 network cable to connect paralleling bus (SENS p/n
208118-72 for 72-inch length or p/n 208118-180 for 180-inch length)
Load Dump protection
Output voltage over-shoot is limited to 15% to prevent damage to
connected devices if battery is disconnected while charger is
operating
Output Blocking
protection
Prevents sparking during battery connection when battery is first
connected to charger; serves as an "OR" diode to isolate a non-
functioning charger from others in a redundant charger configuration
Adjustment
& Controls
Charge mode control
Fully automatic patented Dynamic Boost system.
Manual boost and
battery commissioning available from keypad.
Keypad adjustment
Enable or change all settings from front panel
Computer adjustment
Change or customize settings from computer using computer to
charger cable/native USB (optional) and SENS Setup Utility Kit (SENS
p/n 209254 plus SENS software available at
www.sens-usa.com
)
Status
display
LEDs
Two multi-color front panel status LEDs
Digital metering
DC voltmeter accurate to +2%; DC ammeter to +5%. AC input voltage is
for reference only. If AC waveform is not sinusoidal or is distorted the
AC voltage will not be reported accurately.
Status messages
20-character display of status and alarm messages
Alarms
Alarms
Factory set and field reconfigurable.
Output via network
Alarms available via either J1939 or Modbus ports. Alarm indication
delayed by configured alarm delay value.
Form C contacts
Five Form C contacts, each rated 30VDC/VAC, 2A resistive, assignable
at factory, using keypad or using SENS Setup Utility. Alarm indication
delayed by configured alarm delay value.
Alarm Delay
30 seconds by default, programmable between 5 to 60 seconds using
keypad or SENS Setup Utility. Alarm indication delayed for
communications ports and relay contacts, LED indication not delayed.
Networking
J1939 communications CAN 2.0 extended ID on RJ-45 port
Modbus
communications
Modbus RS-485 on RJ-45 port, Modbus TCP/IP (optional) on RJ-45
port
SENSbus
Proprietary bus for connection of paralleled chargers and SENS
accessories
Environ-
mental
Operating temperature -40°C to +70°C; meets full specification from-40°C to +40°C
LCD: display may be unreadable and life reduced above 65°C
Cooling
Natural convection cooled
Storage temperature
-40°C to +70°C
Cold Start
Cold starts down to -40
°
C. Requires approximately five seconds
additional time to start at temperatures below -20
°
C.
Humidity
5% to 95%, non-condensing
Water ingress
IP20; IP 22/NEMA 3R with optional drip shield (SENS p/n 209291 for
S2 and 209287 for S4)
Vibration
Swept Sine (EN60068-2-6): 4G, 18-500 Hz, 3 primary axes
Random: 20-500Hz, .01G
2
/Hz
Shock
EN 60068-2-27 (15G)
Electrical transient
ANSI/IEEE C62.41 and EN 61000-4-12 on power terminals
