SM 1690
page 6 of 18
File: SM1690_r5eng - Dec. 2013 - Technical note: SM1690
SM 1690
SM 1280
SM 1690
File: SM1690_r5eng - Dec. 2013 - Technical note: SM1690
page 7 of 18
Fuses specifications
The SM1690x has 2 fuses installed on the rear panel (look at
the drawing on page 4, pos. 8): both fuses, labelled F1 and
F2, protect the output line powering the remote head.
A third fuse is on the main board M416, to protect internal
control circuitry.
Fuse F1 and F2 specs:
- Size, type:
10x38 mm, ceramic cartridge
- Speed action:
quick (F)
- Rated current:
6 A
- Rated voltage:
500 V
Fuse F1 specs on M416 board:
- Size, type:
5x20 mm
- Speed action:
slow (T)
- Rated current:
3.15A
- Rated voltage:
250 V
Fuses replacement
To replace the fuses on rear panel proceed as follow:
- switch-off the unit, removing main line from the equip-
ment;
- unscrew fuseholder cap;
- replace the fuse with a new one with the same electrical
characteristics;
- inspect also the fuseholder: if it’s oxidated or it has burned
point then replace it;
- install the fuseholder cap and screw tight.
Internal fuse:
- switch-off the unit, removing main line from the equipment
- remove the unit cover, unscrewing the 6 screws on sides
- locate the fuseholder on M416 pcb: push the cap then rotate
it without any tool (gently!), pull up the cap and inspect the
fuse;
- replace the fuse with a new one with the same electrical
characteristics
- install the fuseholder cap: push it then rotate.
- reassemble the unit cover, screwing the 6 screws on sides
Equipment maintenance
Cleaning
Cleaning of air inlet: verify once a month. In case you need
to remove dust then proceed as follow:
- remove main line from the unit
- remove the cover
- use pressurized air from inside to outside for short time: do
not exceed or you may damage the fan
- install the cover and then power-on again.
Environmental & Physical Characteristics:
Use:
Indoor use only, within industrial
enclosure
Working temperature range
5÷40°C [41÷104°F], Min-Max
ambient temperature
Altitude design criteria:
for altitude up to 2.000 m
Working Humidity range
80% RH up to 31°C [88°F],
decreasing linearly to 50% RH
at 40°C [104°F]
Air cooling requirement, flow:
m
3
/h 200 Input from front panel.
Air clean from dust
Pollution degree:
2, complies with IEC 664
Total Weigth:
kg 40 [88 lbs).
Rack Dimensions, Panel Width:
Panel Heigth:
Length (Depth):
mm 480 [19”]
mm 310 [12.2 “ - 7HE/U]
mm 482 [19” ]
