B&C Technologies IM Series Industrial Ironer - Manual (Page 142)

16
ELECTRICAL CONNECTIONS
Use flexible cables according to local Regulations.
LAYOUT (A) - The RS 28/M - RS 38/M models
electrical connection single-phase power supply
LAYOUT (B) - The RS 38/M - 50/M models
electrical connection three-phase power supply
Fuses layout (A) - (B), see table (C).
Wire size when not indicated: AWG18.
KEY TO LAYOUTS (A) - (B)
IN
- Burner manual stop switch
MB - Burner terminal strip
PG - Min. gas pressure switch
PS - Remote lock-out reset
H1 - Remote lock-out signal
H2 - Burner on signal
H4 - Power on signal
H5 - Permission ok
OCR - High-low control.
OC
- Operating control.
HL - High limit.
Y0 - Pilot valve
Y10 - Adjustment valve
Y11 - Safety valve
Y13 - Pilot valve (safety)
LAYOUT (D)
Connection of RWF40 and related probe to RS 28-
38-50/M burners (modulating operation)
Note
The OCR and OC controls are not required when the
PID control RWF40 is connected, as their function is
performed by the RWF40 itself.
It can be connected to the terminals:
- T1 -T2, to replace the remote control TL
Key to layout (D)
BT - Temperature probe
BP - Pressure probe
MB - Burner terminal strip
a
- Red
b - Red
c - White
d - White
NOTES
• The setting of the thermal overload must be according
to the total burner amperage draw.
• Models RS 38-50/M leave the factory preset for 208 -
230 V power supply. If 460 V power supply is used,
change the motor connection from delta to star and
change the setting of the thermal cutout as well.
• Models RS 28-38-50/M have been type- approved for
intermittent operation. This means they should com-
pulsorily be stopped at least once every 24 hours to
enable the control box to check its own efficiency at
start-up. Burner halts are normally provided for auto-
matically by the boiler load control system.
If this is not the case, a time switch should be fitted in
series to IN to provide for burner shut-down at least once
every 24 hours.
(A)
(B)
RS 28/M
RS 38/M
Single-
phase
RS 38/M
Three-phase
RS 50/M
120 V 120 V
208 -
230 V
460 V 460 V
208 -
230 V
460 V 575 V
F A T10 T10 T6 T6 T4 T6 T6 T4
(C)
(D)
D2322
RWF40
D2271
D2272
Field Wiring Diagram
RS 28/M - RS 38/M Single-phase
with burner mounted Siemens LFL control
Field Wiring Diagram
RS 38/M - RS 50/M Three-phase
With Burner mounted Siemens LFL control
132