MER-MAN-14V01 (1002)
Copyright © 2014 Defi ne Instruments
3
SAFETY NOTICES
For your safety and the prevention of damage to the Merlin unit and other equipment con-
nected to it,
please read and carefully observe all safety regulations and instructions
. Use
of this instrument in a manner not specifi ed by the manufacturer may compromise the protec-
tion provided by the instrument.
This instrument should not be used to directly drive valves, motors, or other actuators, unless
equipped with appropriate safeguards. It is the responsibility of the user to indentify potential
hazards that may arise in the event of a fault to unit, and implement safeguards for the pre-
vention of harm to persons or equipment.
CAUTION
Risk of electric shock
CAUTION
Risk of danger
For your safety, please read complete instructions prior to installation and operation of
the Merlin. In particular, consult this manual in all cases where hazard symbols are marked
on your Merlin unit, in order to understand and avoid potential hazards. The safety of any
system incorporating this unit is the responsibility of the assembler of the system.
1
SPECIFICATIONS
1.1 - General meter specifi cations
Power
Power supply
24–250V AC / 19.5–250V DC,
47–63Hz, 6VA max
Isolation
2,300Vrms for 1min to all inputs
and outputs
Analogue input
Input
Universal (see Section 6 for full input
specifi cations and wiring)
Excitation power
Excitation
22V ±10% (25mA max)
Relay output
OPTIONAL
Type
2x Form A relays
Isolation to sensor and user input com-
mons
2,300Vrms for 1min
Working voltage 240Vrms
Contact rating
One Relay energized: 3amps @ 120/240V AC
or 28V DC (resistive load)
3amps max total current with both relays
energized
Life expectancy
100K cycles min at full load
rating
