Table of Contents
Related Manuals for ISE QLS-1
Summary of Contents for ISE QLS-1
- Page 1 QLS Quad Output 4-20 mA Current Loop Splitter / Retransmitter With ±10V common mode isolation between input & outputs ISE, Inc. 10100 Royalton Rd., Cleveland, OH 44133 USA Tel: (440) 237-3200 Fax: (440) 237-1744 Website: ISEinc.com...
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Page 2: Ordering Guide
Inspect the label on the unit for the type of input power: QLS-1 for 85-264 Vac power, or QLS-2 for 10-48 Vdc or 12-32 Vac power. In the event the unit is not as ordered or is inoperable, return it to the place of purchase for repair or replacement. -
Page 3: Safety Considerations
Cautions: This unit may be powered from 85-264 Vac with the worldwide voltage power supply (Model QLS-1) or from 12-30 Vac or 10-48 Vdc (Model QLS-2). Verify that you have the proper model for the power to be used. The 85-264 Vac power connector (P1 Pins 1-3) is colored Green to differentiate it from other input and output connectors. -
Page 4: Jumper Settings
6. JUMPER SETTINGS The four outputs are always 4-20 mA process loops. The signal input can be 4-20 mA, 1-5V, 0-5V or 0-10V, as set by jumpers adjacent to the signal input connector on the circuit board. The factory default input setting is 4-20 mA. - Page 5 Floating loads: Any output load R that is floating (not connected to a local ground or earth ground) can be connected between current output (Pin 1) and current return (Pin 2). Current return is internally tied to signal ground SG, which can be floating or be connected to earth ground.
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Page 6: Setting & Calibration
If a load R is grounded to a local loop ground LG, the available common mode voltage CMV is limited on the positive side by the unit’s internal power supply and on the negative side by the 600 mW power dissipation limit of an output tran- sistor. -
Page 7: Specifications
Loop Continuity Indication ..Yellow LED lamp per loop, brightness increases with current Power Input Standard Power (QLS-1) ....85-264 Vac or 90-300 Vdc (DC operation not UL approved) Low Power Option (QLS-2) ..............10-48 Vdc or 12-32 Vac Power Frequency ....................DC or 47-63 Hz Power Isolation ............ -
Page 8: Limitation Of Warranty
10. WARRANTY Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a period of one year from the date of purchase. In the event of a defect during the warranty period, the defective unit may be returned to the seller, which may be Laurel or a Laurel distributor.
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