Fema M Series, User Manual, Page: 33 / 36

FEMA ELECTRÓNICA . SERIES M . M60-LC
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2.7 Module S2
Protocol ASCII
Type of bus RS-232, up to 57.6 Kbps
Isolation 1000 Vdc
Type of terminal plug-in screw terminal, pitch 5.08 mm
Installation allowed at Opt.1, Opt.2, Opt.3
The S2 module provides 1 isolated RS-232 ASCII output, to in-
stall on Series M meters.
The protocol implements a MASTER / SLAVE architecture, ad -
dressable with up to 31 slave modules. The slave mode allows
access to the instrument registers (display values, alarm sta -
tus, memory of maximum and minimum, etc).
Configuration from the front key pad, through the ‘Opt.1’,
‘Opt.2’ or ‘Opt.3’ menu entries, depending on the slot where
the module is installed.
The S2 modules can be supplied already installed into a Series
M panel meter or as a standalone module. The installation
requires no soldering or special configuration.
Special modules R2, R4 and R6 offer 2, 4 and 6 relay outputs,
to install on Series M meters.
Configuration from the front key pad, through the ‘Opt.1’
menu entry.
Modules R2, R4 and R6 are not compatible between them and
can not be mounted together with R1, T1 or SSR modules. In -
stalling a R2, R4 or R6 module disables the alarm menus AL1,
AL2 and AL3 of the instrument.
Choose special modules R2, R4 or R6 when a higher density of
relays is needed.
Type of relay 3 contacts (Com, NO, NC)
Max. current 6 A (resistive load) (each relay)
Max. voltage 250 Vac continuous
Isolation 2500 Veff
Type of terminal plug-in screw terminal, pith 3.81 mm
* terminals approved for 300 V (UL1059, groups B and D)
and 160 V (VDE with CAT-III and pollution degree 3).
Module R2 fills Opt.1
Module R4 fills Opt.1 and Opt.2
Module R6 fills Opt.1, Opt.2 and Opt.3
2.8 Modules R2, R4, R6
For additional information:
http://fema.es/docs/4254_SERIES_M-K-S_OPTIONS_manual_en.pdf
For additional information:
http://fema.es/docs/4254_SERIES_M-K-S_OPTIONS_manual_en.pdf
Figure 26 - Detail of the ‘S2 ’RS-232 communications module
Opt.2 Opt.1
Op
t.3
Power
A B C D E A B C D E
ABC
DE
Signal
A Wire Tx for ‘daisy-chain’ data transmission
B Wire Rx for ‘daisy-chain’ data reception
C Wire Tx for data transmission
D Wire Rx for data reception
E GND
Figure 27 - Connections for RS-232 ‘S2’ output
Figure 28 - Detail of an ‘R6’ module
A B C D E F G H I J K L
MN
OP
QR
Power
Opt.2 Opt.1
Op
t.3
Signal
Common Norm open (NO) Norm. closed (NC)
relay 1 A
B C
relay 2 D
E F
relay 3 G
H I
relay 4 J K L
relay 5
M
N O
relay 6
P
Q R
Figure 29 - Connections for modules ‘R2’, ‘R4’ and ‘R6’