Table of Contents
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
Hide quick links:
Advertisement
Table of Contents
