Download Print this page

Terminal Assignment - Honeywell CENTRA LINE MERLIN NX Series Installation & Commissioning Instructions

Room controller
Hide thumbs

Advertisement

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS
Wall Mounting/Dismounting
The unit can be mounted on floors, walls, and ceilings in any
desired orientation. (See also section "Ambient
Environmental Limits" on pg. 27 for temperature range
restrictions with floor/ceiling mounting.)
The unit is mounted by inserting optional screws
(recommended: DIN EN ISO 7049 – ST4,2x22 – C – H)
through the corresponding screwing noses.
RLxN: 187.5
RSxN: 151.5
WM1
WM2
24V~
AO1
24V~
GND
AO2
AO3
24V~
GND
AO4
UI1
GND
UI2
UI3
GND
UI4
C1+
C1-
GND
20
21
22
BACnet MS/TP
C2+
C2-
GND
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
23
24
25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
L
N
24V~
24V0
TN
T~
T01
TN
T02
RO4
IN4
RN
RN
IN1
RO1
IN2
RO2
IN3
RO3
DIN EN ISO 7049 – ST4,2x22 – C – H
Fig. 7. Drilling template (view from above)
After mounting the unit onto the wall, snap the appropriate
terminal protection covers (see Fig. 4 and Fig. 5 on pg. 2) into
place onto the housing by hand.
NOTE: In the case of wall-mounting, optional terminal pro-
tection covers (in the case of the RLxN [large
housings]: IRM-RLC; in the case of the RSxN [small
housings]: IRM-RSC) must be installed in order to
comply with IP30.
The covers can be fixed into place using optional screws
(recommended: DIN EN ISO 7049 – ST2,9x9,5 – C (F) – H).
To remove a cover, place a screwdriver in the two leverage
slots (marked with arrows) and pry it loose.

TERMINAL ASSIGNMENT

General
For a complete list of all terminals and a description of their
functions, see Table 2 and Table 6.
NOTE: All terminal blocks capable of carrying either low
voltage or line voltage are orange-colored.
The delivery includes a plastic bag containing additional,
removable terminal blocks for BACnet MS/TP and Sylk
interfaces.
SERVICE
99.5
The controller is powered by 230 VAC, and is equipped with
differing numbers of triac outputs, relay outputs, etc. capable
of being configured in a variety of ways. See Table 1 on page
1.
Every controller features a terminal assignment label on the
top of the housing.
Power Supply Terminals
Power is supplied via an orange-colored fixed screw-type
terminal block (terminals 1+2).
See also section "Power Supply" on pg. 11.
Input / Output Terminals
The controller features rows of terminal blocks on the top and
bottom.
In the case of the RLxN (large housing), the controller has
double rows of analog outputs (AOs) and universal inputs
(UIs) at the top and a single row of binary outputs (BOs) –
triacs (TRs) and relay outputs (ROs) – at the bottom.
In the case of the RSxN (small housing), the controller
has a single row of analog outputs (AOs) and universal
inputs (UIs) at the top and a single row of binary outputs
(BOs) – triacs (TRs) and relay outputs (ROs) – at the
bottom.
NOTE: According to VDE guidelines, it is not allowed to mix
low-voltage and high-voltage signals on the relays
and triacs.
See also section "I/O Terminals" on pg. 22.
Communication Interfaces
All models of the controller feature the following communi-
cation interfaces:
A Sylk Bus interface (RSxN: terminals 20 and 21; RLxN:
terminals 30 and 31), for connection to TR40x/42x Wall
Modules;
An isolated RS485 interface (RS485-1) for use with
BACnet MS/TP (RSxN: terminals 40, 41, and 42; RLxN:
terminals 62, 63, and 64);
An RJ45 connector for connection of the BACnet WiFi
Adapter;
A non-isolated RS485 interface (RS485-2), for use with
Modbus (RSxN: terminals 23, 24, and 25; RLxN: terminals
26, 27, and 28).
3
EN1Z-1035GE51 R0420

Advertisement

loading

This manual is also suitable for:

Clmerl4nClmerl6nClmerl8nClmers4nClmers5n