Contents

Campbell Scientific PS512M Power Supply Instruction Manual PDF

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Summary of Content for Campbell Scientific PS512M Power Supply Instruction Manual PDF

PS12LA, PS512M, CH12R, CH512R POWER SUPPLIES AND CHARGING REGULATORS

INSTRUCTION MANUAL

06/00

COPYRIGHT (c) 2000 CAMPBELL SCIENTIFIC, INC.

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Warranty and Assistance The PS12LA, PS512M, CH12R, CH512R POWER SUPPLIES AND CHARGING REGULATORS are warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products. The customer shall assume all costs of removing, reinstalling, and shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC. will return such products by surface carrier prepaid. This warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products which have been subjected to modification, misuse, neglect, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special, indirect, incidental, or consequential damages.

Products may not be returned without prior authorization. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. After an applications engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. CAMPBELL SCIENTIFIC's shipping address is:

CAMPBELL SCIENTIFIC, INC. RMA#_____ 815 West 1800 North Logan, Utah 84321-1784

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

Non-warranty products returned for repair should be accompanied by a purchase order to cover the repair.

815 W. 1800 N. Logan, UT 84321-1784 USA Phone (435) 753-2342 FAX (435) 750-9540 www.campbellsci.com

Campbell Scientific Canada Corp. 11564 -149th Street Edmonton, Alberta T5M 1W7 CANADA Phone (780) 454-2505 FAX (780) 454-2655

Campbell Scientific Ltd. Campbell Park 80 Hathern Road Shepshed, Loughborough LE12 9GX, U.K. Phone +44 (0) 1509 601141 FAX +44 (0) 1509 601091

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PS12LA, PS512M, CH12R, CH512R Power Supplies and Charging Regulators

1. General Description The PS12LA and PS512M are 12 volt power supplies that include the charging regulator and a 7 amp hour battery. The CH12R and CH512R are charging regulators that are used with a Campbell Scientific battery pack such as the BP12 or BP24 or with a user-supplied battery. Charging power is typically supplied by a CSI Model 9591 AC Transformer or by an MSX10 or MSX20 solar panel.

The PS512M and CH512R also have two 9-pin connectors that provide a null modem for use in a site, without a datalogger, that connects and powers two Campbell Scientific peripherals that would normally be connected to a datalogger. These peripherals are typically modems linking different communications technologies; e.g., telephone to radio.

2. Specifications PS12LA, PS512M, CH12R, CH512R

Input Voltage (CHG terminals) 15 to 28 VDC or 18 VAC RMS

Battery Connections Charging Output Voltage: Temperature compensated float

charge for 12 V Battery Temperature Compensation Range: -40 to +60C Charging Current Limit: 1.2 Amps typical

Power Out (+12 terminals) Voltage: Unregulated 12 V from Battery Current Limited w / 3 A Thermal Fuse: > 3 A @ < 20C

3 A @ 20C 2.1A @ 50C 1.8 A @ 60C

Battery Packs Operating Temperature Range: -40 to +60C Capacity: PS12LA 7 Amp hours BP12 12 Amp hours BP24 24 Amp hours

AC Transformer: CSI Model No. 9591 Input Voltage: 120 VAC Output Voltage: 18 VAC RMS Output Current (max): 1.2 Amps RMS Protection (automatic reset): 85C thermal reset breaker UL Approval: UL-1950

PS12LA, PS512M, CH12R, CH512R Power Supplies and Charging Regulators

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3. Wiring An internal or external battery is connected to the charger by means of the INT (Internal) or EXT (External) connectors, as shown in Figure 1. An external battery cable comes with the charger that allows connecting another battery to the charger to provide power if the main battery is removed. The red lead connects to the positive battery terminal and the black lead connects to the negative terminal.

Reversal of polarity of external battery will damage the PS12LA or PS512M.

It is possible to leave two batteries connected. The battery connections are diode isolated (Figure 3-2); however, if one of the batteries fail, it could draw all the charging current and the other battery will be discharged.

A battery must be attached for the charger to function correctly as a power supply.

The leads from the transformer or solar panel are connected to the CHG terminals. Polarity does not matter; either lead can be connected to either terminal.

The wires that connect power to the datalogger and/or peripherals are connected to the +12 and ground ( ) terminals.

INT

EXT

B A

T T

CHG

O F

F

O N

CHG

CHG

+12

+12

FIGURE 1. Wiring to Charger

WARNING

CAUTION

To Battery

From Transformer or Solar Panel {

To Datalogger or peripherals {

These look identical when unplugged

PS12LA, PS512M, CH12R, CH512R Power Supplies and Charging Regulators

3

INT

EXT

B A

T T

CHG

O F

F

O N

CHG

CHG

+12

+12

Charging

Regulator IN

OUT 3 A Thermal

Fuse

FIGURE 2. Simplified Charging Circuit Schematic

4. Null Modem on PS512M and CH512R The PS512M and CH12R have two 9-pin CS I/O ports on them with a null modem between them. The ports are used to connect two 9-pin devices that would normally be connected to the CS I/O port on a Campbell datalogger. The charger supplies 12 volts and 5 volts to the appropriate pins on the connector for powering the connected devices.

This cannot be used as a null modem between two RS-232 devices.

CAUTION

These look identical when unplugged

PS12LA, PS512M, CH12R, CH512R Power Supplies and Charging Regulators

4

1 1

2 7 3 8 4 9 5

+5 V

GND HS

Ring +12 V

RX TX ME

Ring

RX TX ME

2

3

4

5

6

7

8

9

+12 V+5 V

1.85 A Thermal

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