Dwyer MTL5045 User Manual
Page 23
6.13
MTL5024 solenoid/alarm driver,
logic drive with phase reversal
The MTL5024 enables an on/off device located in a hazardous area to
be controlled by a volt-free contact or logic signal located in t he safe
area. Output phase reversal (see 3.1.3) facilities are included.
6.13.1
Wiring connections
See figure 6.26 for wiring connections.
6.13.2 Testing
Make the safe- and hazardous-area connections shown in figure 6.27
and carry out the following output voltage and short-circuit current
checks:
6.14
MTL5025 low-current loop-powered
solenoid/alarm driver, IIC
The MTL5025 enables an on/off device located in a hazardous area to
be controlled by a switch or voltage change in a safe area.
6.14.1
Wiring connections
See figure 6.28 for wiring connections.
19
INM5000-6 Jul 2010
6.14 .2
Testing
Make the safe- and hazardous-area connections shown in figure 6.29
and carry out the following output voltage and short-circuit current
checks:
6.15
MTL5031 vibration transducer
interface
The MTL5031 repeats the signal from a vibration sensor in a hazardous
area to a monitoring system in a safe area.
6.15.1 Wiring connections
See figure 6.30 for wiring connections.
Terminal
Function
1
Output –ve
2
Output +ve
3
Earth leakage detection
11
Control –ve
12
Control +ve
13
Supply –ve
14
Supply +ve
Solenoid, alarm or
other IS device
To earth
leakage
detector
+
Vs
Vs+
20 to 35V dc
+
Control
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Figure 6.26: MTL5024 wiring diagram and connections
SW1
Output
Output
(terminals
Phase
Status
voltage
current
11 & 12)
setting
LED
(terminals1 & 2)
(terminals 1 & 2)
Closed
Normal
On
22 to 24V
—
Closed
Normal
On
—
45 to 52mA
Closed
Reverse
On
—
<6mA
Vs
Vs+
20 to 35V dc
+
+
SW1
V
A
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Figure 6.27: Test circuit for MTL5024
Safe area
Hazardous area
Terminal
Function
1
Output –ve
2
Output +ve
3
Earth leakage detection
11
Supply –ve
12
Supply +ve
Solenoid, alarm or
other IS device
To earth
leakage
detector
+
20 to 35V dc
+
6
5
4
3
2
1
7
8
9
10
11
12
Figure 6.28: MTL5025 wiring diagram and connections
Input voltage
Status
Output voltage
Output current
(terminals 11 & 12)
LED
(terminals 1 & 2)
(terminals 1 & 2)
24V
On
22 to 24V
–
24V
On
–
45 to 52mA
+
20 to 35V dc
+
V
A
6
5
4
3
2
1
7
8
9
10
11
12
Figure 6.29: Test circuit for MTL5025
Hazardous area
Safe area
Vs
Vs+
20 to 35V dc
Vibration
transducer
Common
Signal
Transducer
power V
T
Signal ve
Signal 0V
Monitor
6
5
4
3
2
1
7
8
9
10
11
12
13
14
Figure 6.30: MTL5031 wiring diagram and connections
Hazardous area
Safe area
Terminal
Function
1
Common
2
Signal
3
Transducer power V
T
11
Signal –ve
12
Signal 0V
13
Supply –ve
14
Supply +ve