WATLOW DIN-A-MITE Style B User's Manual
7
Alarm Relay
or Indicator
V~
120 or 240 V~
@ 300 mA maximum
energizes on alarm
1A
Current
Transformer
(CT)
Heater
Load Wire
7
8
9
10
11
12
13
14
15
16
1 2 3
4 5 6
CT
Alarm
Current Transformer and Alarm Wiring
ç
Ó
1
Ó
2
Ó
3
DB _ _ - _ _ _ _ - S_ _ _
The Watlow DIN-A-MITE alarm
option provides a common alarm
output for shorted SCR conditions.
This is a non-latching alarm.
A shorted SCR alarm is detected
when there is no command signal
and a load current is detected. The
alarm output is then energized.
Load Current
Passes of Load
Wire Through the
Current Transformer
5 to 9A
2
10 to 30A
1
T1
T2
T3
Heater
Current
Transformer (CT)
7
8
9
10
11
12
13
14
15
16
1 2 3
4 5 6
CT
Neutral
3-phase, 3-leg Current Transformer Wiring
T1
T2
T3
Heater
Current
Transformer (CT)
7
8
9
10
11
12
13
14
15
16
1 2 3
4 5 6
CT
3-phase, 2-leg Current Transformer Wiring
ç
Ó
1
Ó
2
Ó
3
ç
Ó
1
Ó
2
Ó
3
ç
Ó
1
WARNING:
Use National Electric (NEC)
or other country-specific
standard wiring practices
to install and operate the
DIN-A-MITE. Failure to do
so may result in damage to
equipment and property,
and/or injury or loss of life.
NOTE: If you plan to wire
multiple DIN-A-MITE alarm
outputs, you need to
include an intermediate
relay for each DIN-A-MITE
used.
Ó
2
WARNING:
Wiring examples show L2
in phase-to-phase, 200 V
Å
(ac) and above
configuration. In phase-to-
neutral, 100V
Å
(ac) and
above applications, L2 is
neutral and must not be
fused or switched. Failure
to follow this guideline
could result in personal
injury or death.
Ó
3
WARNING:
Only authorized and
qualified personnel should
be allowed to install and
perform preventive and
corrective maintenance on
this unit. Failure to follow
this guideline could result
in damage to equipment,
and personal injury or
death.
Torque Guidelines
• Properly torque line and
load terminals to 1.4 Nm
(12 in-lb).
• Retorque after 48 hours
to minimize wire cold
flow.
• Retorque line and load
terminals every 3 to 6
months.
This configuration is
for a 4 wire configured
heater only!
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