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2.7 Module S2
The S2 module provides a RS-232 communications module for Series
S of panel meters. ASCII protocol with 'Master' / 'Slave' architecture.
Addressable with up to 31 modules. Frames codified in represent-
able ASCII characters (codes 32 to 255), directly visible using 'hyper-
terminal' or similar programs.
• Access to display values, alarm status, memory of maximum and
minimum, alarm setpoints, ...
Configuration from instrument front keypad, through menu entries
'Opt.1' or 'Opt.2', depending on the position the module is installed.
The S2 module can be ordered pre-installed into a Series S panel me-
ter, or standalone for delayed installation, as it does not require sol-
dering or special configuration.
Protocol
ASCII
Bus type
RS-232, up to 57.6 Kbps
Isolation
1000 Vdc
Slots allowed
'Opt.1', 'Opt.2'
Terminal E
Terminal D
Terminal C
Terminal B
Terminal A
Opt.1
A B C D E
Signal
For more information : http://fema.es/docs/4254_SERIES_M-K-S_
OPTIONS_manual_i.pdf
GND
Rx1
Tx1
Rx2
Tx2
Opt.2
A B C D E
Power
FEMA ELECTRÓNICA . Series S . S40-T
2.8 Modules R2, R4
The R2 and R4 modules provide 2 and 4 relay outputs for Series S
panel meters. Relays with 3 contacts each, with switching capability
up to 250 V @ 6 A.
Modules R2 and R4 are installed on slot 'Opt.1' and are configured
from instruments front keypad, and provide setpoint configuration,
hysteresis, independent activation and deactivation delays, and sec-
ond alarm setpoint for windowed alarms.
Only one module R2 or R4 can be installed per instrument. Modules
R2 and R4 are not compatible with standard R1, T1 and SSR modules.
The R2 and R4 modules can be ordered pre-installed into a Series S
panel meter, or standalone for delayed installation, as they do not
require soldering or special configuration.
Type of relay
3 contact relay (NC, NO, common)
Current maximum
6 A per relay (resistive load)
Voltage maximum*
250 Vac continuous
Isolation
2500 Veff
Type of terminal
plug-in screw terminal, pitch 3.81 mm
* terminals approved for 300 V (according to UL1059, groups B and
D) and 160 V (according to VDE on CAT-III and pollution degree 3).
Module R2
occupies Opt.1
Module R4
occupies Opt.1 and Opt.2
Relay
Common
relay 1
A
relay 2
D
relay 3
G
relay 4
J
Table 4 - Connections for modules R2 and R4
Opt.1
A B C D E F
Signal
For more information : http://fema.es/docs/4254_SERIES_M-K-S_
OPTIONS_manual_i.pdf
Normally Open
Normally Closed
(NO)
(NC)
B
C
E
F
H
I
K
L
Opt.2
G H I J K L
Power
19
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