EsiWelma Sensigas EW40, Installation And Operating Manual

Page: 82 / 96

Type / N.
Rev. Data Page Total pages
EW095.605 5 November 2010
82 96
EsiWelma
s.r.l.
11.2.2 Relay module (MAR40)
The modules are formed of a flame-resistant plastic enclosure suitable for mounting on
DIN rail. Each relay module contains four relays, in addition to the control and
communication electronics; the four relays have the previously mentioned functions
below assigned:
•
Pr: Pre-alarm
•
1t: Alarm threshold one
•
2t: Alarm threshold two
•
FA: Fault
The relay operating mode can be selected from the control unit (positive or negative)
Five LEDs are included on the front to view the relay status and the operating status
(See Par. 6.1). A series of devices are included on the terminal board for configuration of
the module as shown in Fig. 11.1 below.
Fig. 11.1 – Configuration devices module MAR40
P
SENSIGAS
MAR40
! P I II
T
B
1
T
B
2
T
B
3
T
B
4
1 2 3 4
T
B
5
T
B
6
E
2
E
1
S1
1 CN1
JP1
ICP
SW1
E
4
E
3
E1, E2 BUS termination jumpers
S1 Configuration key
SW1 1: Pr relay logic
2: 1t relay logic
3: 2t relay logic
4: FA relay logic
E3, E4 Not used
1
A
B
Position A (default):
Latched control
1
A
B
Position B:
Pulse control
SW1
P
SENSIGAS
MAR40
! P I II
P
SENSIGAS
MAR40
! P I II
T
B
1
T
B
2
T
B
3
T
B
4
T
B
1
T
B
2
T
B
3
T
B
4
1 2 3 4 1 2 3 4
T
B
5
T
B
6
E
2
E
1
S1
1 CN1
JP1
ICP
SW1
E
4
E
3
E
4
E
3
E1, E2 BUS termination jumpers
S1 Configuration key
SW1 1: Pr relay logic
2: 1t relay logic
3: 2t relay logic
4: FA relay logic
E3, E4 Not used
1
A
B
Position A (default):
Latched control
1
A
B
Position B:
Pulse control
1
A
B
Position A (default):
Latched control
1
A
B
1
A
B
Position A (default):
Latched control
1
A
B
Position B:
Pulse control
SW1