Omega Engineering OM-420 manual

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Table of contents for the manual

  • Page 1

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 1 Stamford, CT USING THE RPS-1, RECHARGEABLE POWER SUPPLY IN THE OM-420 OVERVIEW: The RPS-1 is a self-contained battery power source for use in conjunction with the OM-320/420 System Base to power transducers requiring external power (e.g. Strain Gages, Pressure transducers, 4 to 20ma Loop Transmi[...]

  • Page 2

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 2 Stamford, CT An integral State-of-Charge (SOC) indicator is provided which will display an approximate Battery State-of- Charge based on battery voltage under a fixed load. Test is actuated by depressing a momentary SOC Test Switch. HARDWARE / USER CONTROLS: Figure 1 illustrates the functional b[...]

  • Page 3

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 3 Stamford, CT CONTROL INPUT Two terminal connections are provided for connection of a low voltage power supply control signal. This input signal controls the ON/OFF cycling of power supplies set to the AUTO mode. Typically, this control input is controlled by a OM-320/420 Digital Output. STATE-OF[...]

  • Page 4

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 4 Stamford, CT The MODE switch (bottom or eighth switch) should be set for the desired operation, AUTO or ON. AUTO mode configures the supply to cycle ON and OFF per the state of the control signal coming from an external device (OM-320/420). When the CONTROL INPUT signal (connected on the four po[...]

  • Page 5

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 5 Stamford, CT voltage is set to 12 VDC or higher output. For 12VDC or higher power supply OUTPUT VOLTAGE settings, the MAIN POWER SWITCH must be set to 24VDC. In the 12VDC mode, the two batteries are in parallel, hence the amp hour capacity is doubled (i.e. approx. 4AH). In the 24VDC mode, the tw[...]

  • Page 6

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 6 Stamford, CT held down for approximately 10 seconds to dissipate any battery surface charge and give the most consistent reading. Best SOC readings are given with both power supplies off and no charging current. If the supplies are delivering current to an external load, the SOC will indicate sl[...]

  • Page 7

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 7 Stamford, CT BATTERY REPLACEMENT NOTE: USE CAUTION IN WORKING WITH THE GEL-CELL BATTERIES TO PREVENT SHORTING OF THE TERMINALS OR WIRING AT ALL TIMES! Under reasonable operating conditions and temperatures, the two gel-cell batteries should provide several hundred charge/discharge cycles. When t[...]

  • Page 8

    USING THE RPS-1in the OM-420 Omega Engineering Inc. 8 Stamford, CT PROBLEM: Batteries are fully discharged. SOLUTION: Charge the batteries. SYMPTOM: STATE-OF-CHARGE INDICATOR SHOWS LESS THAN FULL PROBLEM: Batteries are slightly discharged SOLUTION: Charge PROBLEM: Power supplies are ON dropping the battery voltage SOLUTION: Turn off supplies before[...]