Sentinel 300P Series

Microprocessor controlled, programmable battery charger  High rate, low ripple float charging: 10A @ 12/24 VDC  AutoBoost and temperature compensation  Options for RS485/CAN connectivity, backlit display and analog meters  Panel mount module or wall mounted, stainless steel enclosure  For stationary engine, genset and standby power applications

Sentinel 300P battery chargers provide new levels of DC power control, monitoring and protection for stationary engine starting and standby battery applications. 

Advanced Sentinel charging features included as standard:

• Switch mode charging technology: high power efficiency and low heat dissipation, plus wide supply voltage tolerance, in a compact and lightweight package.
• Multistage charging: float, bulk, absorption and AutoBoost stages ensure no compromise between rapid charge recovery and long-term battery capacity and life.
• Low output ripple: <1% ripple, beneficial for vented lead acid and NiCd cells, essential for VRLA, and configurable for use as a standalone DC power supply.
• AutoBoost: triggered automatically on low charge levels or manually by remote switch, AutoBoost temporarily increases the charge voltage before returning to float mode. Equalizing battery cell charge without overcharge and gassing, AutoBoost maximizes cell capacity and life.
• Temperature compensation: ensures batteries are charged at the optimal voltage, which varies significantly with ambient temperature. Sentinel can measure temperature with a battery-mounted sensor and adjusts output voltage to prevent under or over charging.

In addition, the Sentinel 300P includes:

• Flexible configuration: microprocessor programmability for automatic or manual configuration of charge output voltages (12 V or 24 V nominal), cell types/numbers and application – all in one standard model. Programming is by circuit board links or PC-based software configuration and monitoring tool.
• Inputs and outputs: for remote charger control and signaling of charge fail, high/low battery volts and mains fail faults. Standard output functions are NFPA 110 compliant. Non-standard input/output functions available to special order.
• Display, instrumentation and communication: options for backlit LCD readout, analog metering and CAN 2.0B / SAE J1939 data communication; all models include RS485 communication for configuration and control.

The Sentinel 300P is available either as an open-frame, UL-recognized module for mounting in existing control panels or as a UL-listed, wall-mounted stainless steel enclosure with LCD and analog metering options.

Electrical connection is by screw terminal blocks. On enclosed models, wiring harness access is by knock-out cable gland holes in the case side.

• Power supply
  • Operating voltage: 95 – 250 V AC
  • Operating frequency: 47 – 63 Hz.

• DC Charge Output
  • Nominal voltage: programmable 12 or 24 V DC
  • Float/boost voltage: programmable, see output calibration table
  • Maximum current limit: 10 A 
  • Voltage ripple: <1%
  • Line regulation: <2%
  • Load regulation: <2%

• Outputs x3 (x4 for non-CAN configurations):
• All models: 
  • 1 x SPCO (RL1), 1 x SPNC (RL2), 1 x SPNO (RL3), dry/volt-free contacts (common feed for RL1, RL2 & RL3) 
• Standard models (non-CAN configurations): 
  • 1 x SPNC (RL4), dry/volt-free contacts, standard output functions (charge fail, AC fail, low battery volts, high battery volts) are NFPA 110 compliant

• Rating (all relays): 1A max @ 30 VDC (resistive load), UL class 2
• Inputs x2: Closed to negative DC to activate, configurable function

• Operating temperature: –40° F to 140° F / –40° C to 60° C
  Display viewability (LCD models): 32° F to 122° F / 0° C to 50° C
• Humidity: 20% to 90% RH
• Electrical safety: 2014/35/EU, EN IEC 61204-7:2018
• Electromagnetic compatibility: 2014/30/EU, EN55032:2015, EN61000-6-2:2019, EN61000-6-4:2019
• RoHS: EU 2015/863, EN IEC 63000:2018
• UL approvals
  All standard (E)SNTL300P models:
  • BBGQ: UL1236, CSA22.2 no. 107.2
  • BBHH: UL1236 SE