INM 5500 Rev 11
64
8 .3 .5 Module: MTL5581
Figure 8 .9: AI test circuit #5 “mV input”
Note: V1 should be capable of measurement to within 1
m
V.
Output Measurements
1. With the LINK connected, vary output V2 between 0 and 50mV using RV1. V1 should show
<50mV variation. (
Note: Safety Drive can be ON or OFF
)
2. With the LINK disconnected and Safety Drive ON, V2 should drive to >+50mV with the
switch set to ‘+’, or <–50mV with the switch set to ‘–’.
8 .3 .6 Module: MTL5582/5582B
Figure 8 .10: AI test circuit #5 “Resistance input”
Output Measurements
1. Set Sw1 & Sw2 to ON for 3-wire operation. Set the resistance box to any value between 10
and 400W and switch on power supply.
2. The green PWR LED should go to a steady state after initially flashing. If the flashing does not
stop after 5 seconds then either the setup wiring is faulty or the unit is faulty.
3. Vary the resistance box setting between 10 and 400Ω and confirm the output voltage varies.
4. Short circuit the input and check that the output voltage is ≤ 51.6mV after 5 seconds.
5. Open circuit the input and check that the output voltage is ≤ 2.071V after 5 seconds and that
the green PWR LED is flashing.
6. Set the input resistance to 200Ω and check that the output voltage settles to 1.0V ± 32mV
+
–
+
–
i/p
o/p
Resistance
box
0 - 400
Ω
min.
5.0mA ± 150
µ
A
47mV - 2.100V
2-wire
3-wire
4-wire
–
V
+
9
10
11
12
1
3
4
5
