YOKOGAWA EXA TB TB400G, User Manual

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<3. INSTALLATION, PIPING, AND WIRING>
3-10
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
3.3.5 Contact Output Wiring
The converter outputs contact signals for failure, maintenance, and upper and lower limit alarm
or automatic cleaning/in calibration. Use a finished ø6 to ø 12 mm cable for this wiring (select a 2-,
4-, or 6-conductor cable depending on the number of contact outputs used). The contact rating
for contact output relays is as shown in Table 3.3. For the instrument to be connected, select that
which satisfies the conditions in Table 3.3.
Table 3.3 Contact Rating for Contact Output Relay
DC relay AC relay
Maximum permissible contact voltage 220 V 250 V
Maximum permissible contact current 2 A 2 A
Maximum permissible contact power 60 W 125 VA
Connect each conductor of the cable to terminals F1, F2, M1, M2, C1, and C2 respectively.
Before connection, end-treat the cable conductors. Strip off the cable insulation covering by
about 40 mm and attach crimp terminal lugs conforming to M4 (4 mm) screws to each conductor.
Table 3.4 shows the operation of each contact output.
Table 3.4 Contact Output Operation
Contact Operation
M1, M2 Closed (setting upon shipment from the factory) for maintenance
(other than the <MEAS.> mode. *2
F1, F2 Open when a failure occurs (setting upon shipment from the factory). *2
C1, C2 *1 Open when the upper or lower alarm is generated (at shipment from the factory). *2
or
Closed during automatic calibration or automatic cleaning. *2
*1: Contacts C1 and C2 can be used in two ways: for upper and lower limit alarms and for automatic cleaning and calibration. These
can be selected with FUNCTION "E" in the <PROGRAM1> mode. When shipped from the factory, this is set for the upper and
lower alarms.
*2: Either open or closed can be selected when the contact operates. Set them with FUNCTIONs "C" to "F" in the <PROGRAM2>
mode.