EW089.309_en
–
rev.B
Gas detection Control Unit
–
UCE1
27/04/2021
Gas detection systems for industrial environments
4 of 4
TERMINAL BOARD
+
(TB1)
Power supply 12 Vac/dc (positive)
-
(TB1)
Power supply 12 Vac/dc (negative)
+
(TB3)
OC output 12 Vac/dc (positive)
-
(TB3)
OC output 12 Vac/dc (negative)
C
Alarm
Alarm relay output (common)
NC
Alarm
Alarm relay output (Normally Closed contact)
NO
Alarm
Alarm relay output (Normally Open contact)
URx13 detector connections
C
Detector input (
C
, common)
S
Detector input (
S
, signal)
A
Detector input (
A
, power supply 6.5V)
URx20/21.. detector connections
C
Detector input (
+12...…24V
, negative power supply/signal)
S
Detector input (
+4...…20mA
, positive signal)
A
Detector input (
+12…...24V
, positive power supply/signal)
DESCRIPTION GAS DETECTION CONTROL UNIT
1
TB1 - Power supply terminals 12 Vac/dc
2
Protection fuse 1A
3
TB3 -
“Failure” open collector term
inals
4
TB2 -
“Alarm” relay terminal block
5
LED signalling presence of current
6
LED failure alert
7
Gas alarm LED alert
8
Reset/Test button
9
TB4 - Gas detector connection terminals
10
Jumper E5
E6 for configuration of detector inputs:
E5 - Sel. power supply: A=6.5V (URx13), B=12V (URx20/21)
E6 - Sel. input A=(URx13), B=4..20mA (URx20/21)
11
Set-up jumper:
E1
–
operating mode
E2
–
Alarm relay operating mode
E3
–
selection detector type: omitted=URx13, A=URx20/21
E4
–
available
12
Connector P1 (communication
–
not used)
13
CN1 connector and service Jumper J1
CONNECTION DIAGRAMS
Control unit with NO solenoid valve, negative mode.
N1
UCE1 control unit
B1
URx13 or URx20/21.. detector
Y1
NO gas solenoid valve (Vaux: 24
230Vac)
L1
Failure alert device (12 V/300 mA max)
DIMENSIONS
UCE1 control unit
URx13 (or URx20SW) detectors
URx20/21.. detectors
Depending on model (see dedicated technical data sheet).
Installation data
Installer's stamp
Control unit installation date:
Detector replacement date:
Notes: Due to our policy of continuous product improvement, specifications
are subject to change without notice.
58
48
33
105
90
62
45
TB
1
TB
2
TB
3
58
48
33
105
90
62
45
TB
1
TB
2
TB
3
66
45
90
66
45
90
+
-
NO
C
S
A
C
NC
TB2
TB1
TB4
Allarme
+
-
TB3
+
-
NO
C
NO
C
S
A
C
NC
TB2
TB1
TB4
Allarme
+
-
TB3
Alarm
+
S
A
C
-
NO
C
NC
S
A
C
B1
12 Vac/dc
12 Vac/dc
N1
Y1
Vaux
Vaux
A
lla
rm
e
+
-
L1
-
1
2
…
2
4
V
+
4
…
2
0
m
A
+
1
2
…
2
4
V
URx20..
URx13
+
S
A
C
-
NO
C
NC
S
A
C
B1
12 Vac/dc
12 Vac/dc
N1
Y1
Vaux
Vaux
A
lla
rm
e
+
-
L1
-
1
2
…
2
4
V
+
4
…
2
0
m
A
+
1
2
…
2
4
V
URx20..
URx13
1
2
3
11
9
10
12
8
5
6
7
13
4
1
1
2
2
3
3
11
9
9
10
12
8
8
5
5
6
6
7
7
13
4
4
A
la
rm
