Changing the Batteries of a PCMCIA Memory Card

General Points

Memory cards:

TSX MRP P• standard RAM
TSX MRP C• RAM for files and application and TSX MCP C• Flash EPROM
TSX MRP F• data and file-type

have 2 backup batteries, TSX BAT M02 (main) and TSX BAT M03 (auxiliary), which need to be changed periodically.

Two methods are possible:

one is preventive, based on a periodic change of batteries, without first checking their status,
the other is predictive, based on the signal sent by a system but, but is only possible for certain memory cards.

Preventive Method

This method is valid for memory cards versions and the PLCs that use those cards. Change both batteries according to the PV of the PCMCIA card, the PLC use, and the lifetime of batteries. It does not matter which battery you change first: the application is preserved by the memory card. For the operate mode for changing the batteries: see the service instructions provided with the memory cards.

NOTE:

Batteries must not be removed from their positions simultaneously. One battery backs up the data and applications while the other is being replaced.
Install the batteries as shown in the following diagrams, noting the correct polarity (+ and -)
the memory card must not exceed 24 hours without its main battery in working order,
to save the auxiliary batteries, you can replace them every 1.5 years. In this case, the maintenance procedure is a bit more complex, because for some memory cards you must remember to change the auxiliary battery only one time out of 3.
the service lives shown above were calculated for the most unfavorable case: ambient temperature around the PLC at 60 °C, and the PLC switched on for 21% of the time in the year (which corresponds to an 8 hour rotation per day with 30 maintenance stoppage days per year).

Predictive Method

This is maintenance based on using bits %S67 and %S75 and using the PCMCIA indicator on the Quantum interface. This method assumes that the auxiliary battery is changed preventively every 1.5 years. It is only possible:

with Unity Pro ≥ 2.02,

NOTE: Unity Pro is the former name of Control Expert for version 13.1 or earlier.
if the memory card is installed in the upper or lower PCMCIA slot on Quantum processors 140 CPU 6•• ••.

When system bit %S67 (card in the top slot) or %S75 (card in the bottom slot) changes to 1 or the PCMCIA indicator on the processor interface flashes, it means that the main battery is weak. You have 8 days to replace the battery, as shown in the following tables.

NOTE: Before turning on the PLC or removing the memory card, save the project in Control Expert. If the PLC must be left off or if the memory card must be outside the PLC for more than 8 days, and you have exceeded the service life of the main battery, then back up the application in Control Expert.

Changing the Batteries

Carry out the following steps:

Step	Action
1	Take the card out of its slot.
2	Separate the PCMCIA card from its clip (or caddy).
3	Hold the PCMCIA card so you can access the battery slot. This is at the end of the card without the connector.
4	Replacement of the TSX BAT M02 battery: see table 1. Replacement of the TSX BAT M03 battery: see table 2.
5	Attach the PCMCIA card to its clip (or caddy).
6	Place the card back in the PLC.

Procedure for the TSX BAT M02 Battery:

Table 1

Step	Action	Illustration
1	Toggle the changeover lever toward the TSX BAT M02 (MAIN) battery in order to remove drawer from the main battery.
2	Remove the used battery from its holder:
3	Place the new battery in the holder, taking care to respect the polarity.
4	Insert the holder containing the battery in the card.

Procedure for the TSX BAT M03 Battery:

Table 2

Step	Action	Illustration
1	Toggle the changeover lever toward the TSX BAT M03 (AUX) battery in order to remove drawer from the battery.
2	Remove the used battery from its holder:
3	Place the new battery in the holder, taking care to respect the polarity.
4	Insert the holder containing the battery in the card.