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6.2
The DO mode enables an open-collector or contact switch output on the safe side to
control an on/off device in the field.
The MTL4-BSIS module base can be fitted with a shorting link (LK1 – see diagram) to
enable the user to increase the output current for solenoid drivers, if required. Consult
the datasheet for the individual parameters.
Note: LFD, when configured, is provided by detecting the field conditions using a 24V
1mS pulse every 1 second. Some LED and sounders may respond to this pulse when
enabled.
6.3
This configuration is an option when relay contacts are required to drive a digital load in
the field. Choose one of the Relay module bases from the table below to suit the field
wiring.
INM MTL SUM5 Rev 1
Digital output (DO)
FIELD
1
10V 14mA
Input/Output
2
–
Common
3
Solenoid
Valve
+
26.5V 90/136mA
4
Figure 6.2 - Digital output options
MTL4-LNKIS-50
Fitting link LK1 will change the Safety Description of the product. Refer to
Digital output (DO - with switched contacts)
FIELD
–
NO
1
X
NC
2
IS Contact
X
Control
+
Com
3
X
Figure 6.3 - Digital output with relay options
MTL4-SD
LK1
SYSTEM
Loop
Disconnect
A
V out
Input/
B
Output
Output +
MTL4-ADIO
C
Common
Output -
MTL4-BSIS
IS power jumper link (Pk50)
WARNING!
the certificate for details.
MTL4-SD
SYSTEM
Loop
Disconnect
A
B
MTL4-ADIO
C
MTL4-BSxxR
Digital
output
Voltage
Contact
output
output
Power +
V
Voltage
Contact
Open
output
output
collector
Power +
Output +
V
Output –
21
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