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Bosch | User manual | Addendum to manual PLN-24CH12 / PRS-48CH12
Add to my manuals3 Pages
Bosch PLN-24CH12 is a reliable battery charger designed for professional security systems, offering advanced features for efficient battery management and power backup. It incorporates built-in Ri monitoring, ensuring compliance with EN54-4 standards and providing accurate supervision of battery health. The charger continuously monitors the internal resistance (Ri) of the battery, providing early warnings when batteries need to be replaced due to aging or degradation.
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Security Systems
Addendum to manual
PLN-24CH12 / PRS-48CH12
1 General
This addendum to the manual of the PLN-24CH12 and PRS-48CH12 chargers contains important information for proper installation and operation.
2 Battery capacity
It is not recommended to use batteries with a capacity of less than 100
Ah. Smaller batteries have a relatively high initial internal resistance
(R i
), that may exceed the threshold for supervision of R i
and cause a fault. Also, when batteries age, their capacity decreases and their R i goes up.
3 R
i
-monitoring
The PLN-24CH12 and PRS-48CH12 battery chargers have built-in R i monitoring. This is important and mandatory for compliance to EN54-4.
It means that the charger monitors the summed resistance of the wiring, fuse, electrical connections and the R i
of the battery. It warns the user when the battery has aged and must be replaced. The R i supervision threshold has been selected such that when the R i
of the battery has increased to the maximum allowed value the backup power system can still power the VACIE.
Because the resistance of the wiring and the connections is incorporated into the measured R i
, it is important that these resistances are very low, otherwise even good batteries will generate a fault. This makes sense because a VACIE can take up to 150 A from the battery and then every 10 mohm will already cause a voltage drop of 1.5 V, limiting the maximum available output power from the VACIE.
4 Wire gauge selection
As installer, you should take into consideration all major contributors to the total resistance, being:
Battery R i
– typically 5 to 6 mohm per battery, depending on size and make.
Cables – very dependent on length and gauge.
Battery fuse – typically 1 to 2 mohms.
Connections – typically 1 mohm.
The actual values need to be checked with the battery supplier and fuse supplier. Also be aware of possible influences of connections, e.g. pay attention to screw-tightening of connections.
Bosch Security Systems B.V.
PO Box 80002
5600JB Eindhoven
The Netherlands www.boschsecurity.com
13 November 2013
Page 1 of 3
Security Systems
Addendum to manual
PLN-24CH12 / PRS-48CH12
Keep some margin to avoid false positive faults. Stay at least 20% below the selected R i
-limit, because there is some tolerance on the measurement accuracy.
To help you selecting the right cable gauge, two tables are provided with maximum cable lengths per wire gauge for a number of battery types. Use this guideline to determine the needed gauge.
The first table is for 24 V battery systems and the second table is for
48V battery systems. The maximum length is given in cm and depicts the total cable length, i.e. all the wire length from charger to battery, the bridges to connect the batteries in series and the length back to the charger. Five different cable gauges are shown with cross-sectional areas of 6 mm 2 to 35 mm 2 . Then two different jumper settings can be selected for the threshold of the R i
-supervision of the charger, the 50 mohm setting is intended for loads up to 100 A, the 75 mohm setting for loads up to 150 A.
Allow for up to 5 hours for the unit to report a battery fault.
In some cases the maximum resistance is already exceeded, even for zero length cables. This is not allowed and indicated as n.a. (not allowed).
Maximum total cable length to battery and return (cm)
24V Cable gauge 6 mm
2
10 mm
2
16 mm
2
25 mm
2
C20 Brand
105 Ah Long
120 Ah Effekta
120 Ah Fiamm
121 Ah Long
126 Ah Long
130 Ah Yuasa
150 Ah Effekta
150 Ah Fiamm
200 Ah Effekta
200 Ah Fiamm
200 Ah Yuasa
210 Ah Long
Bosch Security Systems B.V.
PO Box 80002
5600JB Eindhoven
The Netherlands www.boschsecurity.com
13 November 2013
Page 2 of 3
35 mm
2
Jumper setting
(mohm)
Type
6FM100G/B
BTL12-120
FG2C007
6FM115G/B
6FM120G/B
NPL130-6IFR
BTL12-150
FG2F009
BTL12-200
FG2M009
NPL200-6
6FM200G/B
50 75 50 75 50 75 50 75 50 75
100A 150A 100A 150A 100A 150A 100A 150A 100A 150A
108 3 181 6 289 9 451 14 632 19
142 37 236 61 378 98 590 153 826 214
188
108
142
83
3
37
314
181
236
139
6
61
502
289
378
222
9
98
785
451
590
347 1099
14
153
632
826
486
19
214
108
142
3
37
181
236
6
61
289
378
9
98
451
590
14
153
632
826
19
214
205 100 342 167 547 267 854 417 1196 583
142 37 236 61 378 98 590 153 826 214
222 117 369 194 591 311 924 486 1293 681
188
175
83
70
314
292
139
117
502
467
222
187
785
729
347 1099
292 1021
486
408
Security Systems
Addendum to manual
PLN-24CH12 / PRS-48CH12
Bosch Security Systems B.V.
PO Box 80002
5600JB Eindhoven
The Netherlands www.boschsecurity.com
13 November 2013
Page 3 of 3
48V Cable gauge 6 mm
2
10 mm
2
16 mm
2
25 mm
2
23 mm
2
Jumper setting
(mohm)
C20 Brand
65 Ah Effekta
Type
BTL12-65
65 Ah Fiamm
65 Ah Fiamm
FG26505
FG26507
65 Ah PowerSonic PS12650GB
65 Ah Yuasa
68 Ah Long
70 Ah ABT
70 Ah Fiamm
70 Ah Fiamm
73 Ah Long
75 Ah ABT
NP65-12
6FM65G/B
TM12-320W
FG27004
FG27007
6FM70G/B
TM12-350W
75 Ah Effekta BTL12-75
75 Ah PowerSonic PS12750GB
78 Ah Yuasa NPL78-12IFR
80 Ah Effekta
80 Ah Fiamm
84 Ah Long
BTL12-80
FG28009
6FM80G/B
90 Ah Effekta
100 Ah Effekta
BTL12-90
BTL12-100
100 Ah Fiamm FG2A007
100 Ah PowerSonic PS121000GB
100 Ah Yuasa
105 Ah Long
120 Ah Effekta
120 Ah Fiamm
121 Ah Long
126 Ah Long
130 Ah Yuasa
150 Ah Effekta
150 Ah Fiamm
200 Ah Effekta
200 Ah Fiamm
200 Ah Yuasa
210 Ah Long
NPL100-12
6FM100G/B
BTL12-120
FG2C007
6FM115G/B
6FM120G/B
NPL130-6IFR
BTL12-150
FG2F009
BTL12-200
FG2M009
NPL200-6
6FM200G/B
50 75 50 75 50 75 50 75 50 75
100A 150A 100A 150A 100A 150A 100A 150A 100A 150A
175 n.a.
292 n.a.
467 n.a.
729 n.a. 1021 n.a.
342 n.a.
569 n.a.
911 n.a.
1424 n.a. 1993 n.a.
342 n.a.
569 n.a.
911 n.a.
1424 n.a. 1993 n.a.
88 n.a.
147 n.a.
236 n.a.
368 n.a. 515 n.a.
208 n.a.
347 n.a.
556 n.a.
868 n.a. 1215 n.a.
108 n.a.
181 n.a.
289 n.a.
451 n.a. 632 n.a.
280 n.a.
467 n.a.
748 n.a.
1168 n.a. 1635 n.a.
235 n.a.
392 n.a.
627 n.a.
979 n.a. 1371 n.a.
335 n.a.
558 n.a.
893 n.a.
1396 n.a. 1954 n.a.
175 n.a.
292 n.a.
467 n.a.
729 n.a. 1021 n.a.
285 n.a.
475 n.a.
760 n.a.
1188 n.a. 1663 n.a.
195 n.a.
325 n.a.
520 n.a.
813 n.a. 1138 n.a.
135 n.a.
225 n.a.
360 n.a.
563 n.a. 788 n.a.
242 n.a.
403 n.a.
644 n.a.
1007 n.a. 1410 n.a.
208 n.a.
347 n.a.
556 n.a.
868 n.a. 1215 n.a.
348 n.a.
581 n.a.
929 n.a.
1451 n.a. 2032 n.a.
175 n.a.
292 n.a.
467 n.a.
729 n.a. 1021 n.a.
228
242
18 381
32 403
31 609
53 644
49 951 76 1332 107
84 1007 132 1410 185
368 158 614 264 982 422 1535 660 2149 924
248 38 414 64 662 102 1035 160 1449 224
308
242
308
98 514 164 822 262 1285 410 1799 574
32 403 53 644 84 1007 132 1410 185
98 514 164 822 262 1285 410 1799 574
402 192 669 319 1071 511 1674 799 2343 1118
242 32 403 53 644 84 1007 132 1410 185
308 98 514 164 822 262 1285 410 1799 574
242
308
32
98
403
514
53
164
644
822
84
262
1007
1285
132 1410
410 1799
185
574
435 225 725 375 1160 600 1813 938 2538 1313
308 98 514 164 822 262 1285 410 1799 574
468 258 781 431 1249 689 1951 1076 2732 1507
402 192 669 319 1071 511 1674 799 2343 1118
375 165 625 275 1000 440 1563 688 2188 963
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