PPI ScanLog 96 - Page 31

User Manual
ScanLog 96 Pen Drive Version
29
POWER SUPPLY
As standard, the module is supplied with power
connections suited for 85 to 264 VAC line supply. Use well-
insulated copper conductor wire of the size not smaller
than 0.5mm² for power supply connections ensuring proper
polarity as shown in Figure 13.5. The module is not
provided with fuse and power switch. If necessary, mount
them separately. Use a time lag fuse rated 1A @ 240 VAC.
SERIAL COMMUNICATION PORT
Not used. Do not make any connections.
DC EXCITATION VOLTAGE
The ScanLog 4is optionally supplied with 24 VDC @ 0 mA or 5VDC @ 15 mA power source. This is primarily meant for exciting
2-wire or 4-wire Current / Voltage output transmitters.
For wiring convenience the excitation voltage is made available on two separate terminals (15 & 22). The following figures
illustrate a few connection examples for channel 1.
2-wire Current Transmitter
(24VDC Supply)
19
18171615
24V
mA
-+
4 to 20mA
Output
3-wire Voltage Transmitter
(5VDC Supply)
+
Supply
-
1 to 3.6 V
Output
+
21
2019
V
15
5V
18
4-wire Voltage Transmitter
(5VDC Supply)
-
1 to 3.6 V
Output
+
21
2019
V
15
5V
18
+
Supply
-
DIGITAL INPUT FOR BATCH START COMMAND
Connect a remote potential-free contact closure switch for the purpose of issuing the Batch -
Recording START command. An ‘OPEN’ to ‘CLOSE’ change-over of the contacts initiates time
based batch recording. Once the recording starts, the change in the contact status has no effect.
DIGITAL INPUT FOR ALARM ACKNOWLEDGE
Connect a remote potential-free contact closure switch for the purpose of issuing Alarm
Acknowledgment. An ‘OPEN’ to ‘CLOSE’ change-over of the contacts acknowledges the alarm
and mutes the alarm relay(s)
Figure 13.4 (a)
98
Batch
Start
10
Common
Figure 13.5
2 Pole
Isolating Switch
Power Supply Terminals
Earth
Line
Neutral
Fuse
L
N
2
3
1
98 10
Alarm
ACK
Common
Figure 13.4 (b)