Maintenance; Lightning Surge Protection; Led Functions - M-system M6D Series Quick Start Manual

CHECKING
1) Terminal wiring: Check that all cables are correctly con-
nected according to the connection diagram.
2) Power input voltage: Check voltage across the terminal
7– 8 with a multimeter.
3) Input: Check that the input signal is within 0 – 100% of
the full-scale.
If the thermocouple or its extension wires are broken, the
output goes over 100% (below 0% with downscale protec-
tion) due to the burnout function. Confirm the status in-
dicator LED pattern and check leadwires in such a case.
4) Alarm operations: Check the alarm operations referring
to the figure below.
5) Output load: Check that the output load is 250V AC/
500VA or 125V DC/60W. For maximum relay life with
inductive load, external protection is recommended.
Alarm Trip Operation Terminal No. in parentheses
• Setting Example
Hi alarm (coil energized at alarm) or
Lo alarm (coil de-energized at alarm)
Output
Input
(%)
0
Trip operation in power failure: Terminals 3 – 4 turn ON.

LED FUNCTIONS

■ STATUS INDICATOR LED
The M6DXAT is provided with a status indicator LED
which flashes in different patterns indicating various op-
erating status.
The following figure indicates typical patterns.
TRANSMITTER STATUS
Normal operating mode
Burnout mode
Abnormal operating mode
■ ALARM MONITOR LED
The M6DXAT is provided with an alarm monitor LED
which flashes in different patterns indicating various alarm
status.
The following figure indicates typical patterns.
ALARM STATUS
Alarm ON
Alarm OFF
Power ON delay
Alarm ON delay
SEN TRONIC
AG
Produkte, Support und Service
(3–2)ON
(3–4)ON
▲
50 100
Setpoint
LED ON-OFF PATTERNS
80 milliseconds
ON
LED ON-OFF PATTERNS
160 millisec.
ON
Rugghölzli 2
CH - 5453 Busslingen

MAINTENANCE

Regular calibration procedure is explained below:
■ CALIBRATION
Warm up the unit for at least 10 minutes.
• H Setpoint
Increase the input signal from a value lower than the set-
point and check that the relay trips at the H setpoint within
the setpoint accuracy described in the data sheet.
• L Setpoint
Decrease the input signal from a value higher than the set-
point and check that the relay trips at the L setpoint within
the setpoint accuracy described in the data sheet.
When the setpoints are shifted, recalibrate the unit using
the PC Configurator Software (model: M6CFG).

LIGHTNING SURGE PROTECTION

In order to protect the unit from lightning surges entering
through power supply cables, use of appropriate lightning
surge protectors are recommended. Please contact M-Sys-
tem.
OFF
OFF
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
M6DXAT
mailbox@sentronic.com
www.sentronic.com