7
K3
Three-phase thyristor zero crossing trigger output module (can trigger 3-phase circuit; each loop can trigger
TRIAC or a pair of inverse parallel SCR with current of 5-500A)
K5
Single-phase thyristor phase-shift trigger output module (can trigger one loop of TRIAC or a pair of inverse
parallel SCR with current of 5-500A)
X3/X5
Linear current output module (continuous 0-22mA output, selectable in the range of 0-10mA, 4-20mA etc.).
X5 is equipped with photoelectric isolated power supply.
S/S4
RS485 communication interface module. S4 is equipped with photoelectric isolated power supply.
V24/V12/V10
Isolated 24V/12V/10V DC voltage output with maximum current of 50mA, can supply power for
transmitter.
I2
Switch / frequency signal input interface for inputting external switch or frequency signal, has a 12VDC power
supply for external transducer.
I4
4-20mA/0-20mA analogue input interface, has a 24VDC/24mA power supply for a transmitter.
1.3.3 Installation and replacement of modules
Before the instrument delivery, module installation is done on request, with corresponding parameter set correctly.
Users can replace or install modules by themselves when needed. When replacing a module, you should pull the
controller out of the housing at first, insert a small flat-tip screwdriver into the opening between the original module
and the slot on motherboard to remove the old module, and then install a new module. Changing module type needs
to modify the corresponding parameters.