E2
OVERVIEW
Linked by Ethernet, Network Instrumentation Modules make dis-
tributed instrumentation, high-speed communications, and easy in-
stallation all possible at the same time. The module also creates value
for customers by offering reduced environmental impact, superior
product quality, and higher productivity.
The Supervisor Module is a modular controller designed to execute
either multi-loop cooperative control in combination with multiple
other control modules. The NX-S11/12/21 is equipped with one of
three different types of multi-loop cooperative control function.
MODEL SELECTION TABLE
Supervisor module
Basic
Model
No.
Type
Ring
connection
Option
Addition
1 2 3
NX-
Network Instrumentation
Module
S11
Supervisor module Control
of Temperature difference
between zones
S12
Supervisor module op-
tional start-up control
S21
Supervisor module peak
power suppression control
N
Non-ring communications
R
Ring communications
0
None
00
None
0
None
1
With fault DO
0
None
D
Inspection certificate
T
Tropicalization treatment
K
Anti-sulfide treatment
B
Tropicalization tre
Inspection certificate
L
Anti-sulfide tre
Inspection certificate
NAMES OF PARTS
Main unit
Indicators on the module vary depending on the model No.
(functions).
LED operation indicators
PWR
RUN
MOD
COM
NST
FAIL
Loader jack
Push button
Forced IDLE switch
485: RS-485 indicator
DO: Fault DO indicator
(Option)
BAT: Battery indicator
Fault DO connector
(Option)
Base
Power supply terminal:
1: 24 V DC (+)
2: 24 V DC (−)
DIN rail locking tab:
Used for locking on a DIN rail.
RS-485 communications terminal:
3 wire RS-485 connector terminal
4: DA (+)
5: DB (−)
6: SG
Side connector:
Used for connecting
modules.
RS-485 cutoff switch:
Used to disable
RS-485 communications
with devices connected
on the right side.
←
CONNEC
T
Enlarged view
Communications
enabled
(default setting)
←
CONNEC
T
Communications
disabled
←
CONNEC
T
INSTALLATION
Installation location
Install modules indoors. Minimum clearances are shown in
figures.
Wiring duct, etc.
NX
NX
50 mm
50 mm
W
ir
ing duc
t, et
c.
50 mm
W
ir
ing duc
t, et
c.
80 mm
From the front
Wiring duct, etc.
50 mm*
50 mm*
50 mm
Wiring duct, etc.
Wiring duct, etc.
Note: If used with devices other than this module, check the specifications
of the devices, and choose the larger of the recommended space in
each direction.
Install the controller in a location that meets the following criteria:
•
No high/low temperature/humidity.
•
Free from sulfide gas or corrosive gas.
•
Not dusty or sooty.
•
Protected from direct sunlight, wind, and rain.
•
Little mechanical vibration or shock.
•
Not close to high voltage line, welding machine or other elec-
trical noise generating source.
•
At least 15 meters away from the high voltage ignition device
for a boiler.
•
No strong magnetic fields.
•
No flammable liquid or gas.
•
Indoors
•
I/O common mode voltages: voltage to ground is 30 Vrms
min., 42.4 V peak min., and 60 V DC min.
Linking modules
The NX-S11/12/21 can be linked to other modules using the con-
nectors on the left and right of the base.
When linked, modules share the power supply and RS-485 con-
nection, eliminating the need for wiring. The connection with the
module on the right can be disabled using the RS-485 communi-
cations cutoff switch on the base.
* The clearance required for battery replacement
when the power is on is 60 mm or more.