3
G
Solid-state relay, SSR voltage output module (DC12VDC/30mA)
W1
TRIAC no contact normal open discrete output module (Capacity: 100~240VAC/0.2A, burnt-proof)
W2
TRIAC no contact normal closed discrete output module (Capacity: 100~240VAC/0.2A, burnt -proof)
R
RS232 communication interface module, occupying internal 12VDC power.
⑦
shows the module type of communication (COMM).
S
RS485 photo-electric isolated communication interface module, occupying internal 12VDC power.
S1
RS485 photo-electric isolated communication interface module, occupying internal 24VDC power.
S4
RS485 photo-electric isolated communication interface module, with isolated DC/DC power convertor, without
drawing power from instrument internally.
SL
RS485 photo-electric isolated communication interface modul
e + single channel
normal open relay output module,
occupying internal 12VDC power.(Only available for D6 panel size)
⑧
Power supply of the instrument.
If left blank, the power of the instrument is 100-240VAC. 24VDC means the
power supply of 20~32VDC or AC power (24V AC power has to be specified upon order).
POINTS TO NOTE
1.
K3 module occupies two slots, OUTP and MIO. MIO cannot be used if K3 is installed. If setpoint switching feature is
required, put I2 module in COMM slot. Then set parameter bAud to 1. Two setpoints switching function can be used
in COMM instead of MIO.
2.
The voltage output modules like V24, \/10 or V12 are often used for supplying power for external transducer
or feedback resistance of transmitter. These modules can be installed in any slot except that of D 6 dimension
instrument. To standardize the wiring, it is recommended to be installed in the first idle slot in the order of
MIO, AUX, and COMM.
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.
Electric isolation of the modules:
There are a group of 24V and a group 12V power supply built in the instrument
and isolated to the main circuit. The 24V power commonly supplies voltage output module, such as
V24/V12/V10 (24V/12V/10V voltage output module), I2 (on-off signal input module) and I4 (linear current
input module). The 12V power is commonly supplies output or communication module. Generally, the
relay contact output and TRIAC no contact discrete output are self-insulated from the other circuit, no
matter whether other modules are installed or not. SSR voltage output do es not need to be insulated
from input circuit, because SSR itself has isolation function. Therefore, only the electric isolation
between the communication interface and the current output should be considered. Those modules, for
example, S (RS485 communication interface), R (RS232 communication interface) and X3 (linear current
output), all need the 12V power supply. If more than one of the above modules are installed, in order to
be electric isolated, only one of them can be module without electric isolation, the other modules should
be S4 or X4, which has its own isolated power supply. For example, if an X module is installed in OUTP
(main output) slot, and an S or X module is installed in COMM (communication interface) slot, then OUTP
and COMM cannot be electric isolated, so S or X should be replaced with S4 or X4.
No contact switch module:
W1 and W2 are new types of no contact switch modules which apply the advanced
technology of “burn proof” and zero crossing conduction. It can replace the relay contact switc h.
Compared to the relay contact output module, W1 and W2 have longer life and lower interference. They
