Electrical Data - Honeywell CENTRA LINE MERLIN NX Series Installation & Commissioning Instructions

MERLIN NX ROOM CONTROLLER – INSTALLATION & COMMISSIONING INSTRUCTIONS

Electrical Data

All Models (230 VAC and 24 VAC)
CAUTION
In the case of capacitor-driven fail-safe actuators, the
actuators must be directly connected to a suitable
24-volt power supply. "Suitable" here means: Capable
of withstanding the high in-rush currents characteristic
of capacitor-driven fail-safe actuators.
In the case of such actuators controlled by 24-volt versions of
the controller, this means that the actuator must be connected
to and powered by the removable power supply (terminals 3
and 4), only.
In the case of such actuators controlled by 230-volt versions
of the controller, this means that the actuator must be con-
nected to and powered by a separate transformer, only.
Failing to observe this requirement (e.g., by powering such
actuators via a connection to the controller's power output
terminals) may result in damage to the controller. This is
because the controller's 24 VAC output terminals must not be
subjected to an additional load (besides the inherent load of
300 mA) exceeding the permitted maximum of 600 mA (24-
volt versions of the controller) or 300 mA (230-volt versions of
the controller), respectively.
RL4N, RL8N, RS4N (230 VAC)
Power via terminals 1 + 2: 230 VAC +10% / -15%, 50/60 Hz.
Max. power consumption (when unloaded):
Max. power consumption (when loaded):
The controller is "unloaded" when it has no external load.
Thus, the only load on the controller is the inherent load (8 W)
of the electronics, themselves. The heat dissipation then
amounts to 8 W. The controller is "loaded" when – besides
the inherent load – an additional sum load resulting from max.
300 mA (irrespective as to whether it is supplied by the con-
troller's internal transformer or by an external source) is
applied to the 24 VAC output terminals. The max. unloaded
output voltage at terminals 3 and 4 (RSxN) or terminals 5 and
6 (RLxN), respectively, is 33 VAC (typically: 29.5 VAC).
RL6N, RS5N (24 VAC)
Power via terminals 3+4: 24 VAC 20%, 50/60 Hz.
Max. current consumption (when unloaded):
Max. current consumption (when loaded):
The controller is "loaded" when – besides the inherent load
(300 mA) – an additional sum load resulting from max. 600
mA is applied to the 24 VAC output terminals. The max.
unloaded output voltage at terminals 3 and 4 (RSxN) or
terminals 5 and 6 (RLxN) is identical with the output voltage
of the external supplying transformer.
EN1Z-1035GE51 R0420
8 W.
18 W.
300 mA.
900 mA.
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