SM3300 INTERFACES
DELTA ELEKTRONIKA BV
March 2014
Page 7 - 3
9
STATUS SIGNALS
•
The status outputs have a separate Ø connection (pin 8) to avoid
unwanted offsets in the programming.
•
All the status outputs are logic outputs. Logic "0" means the out-
put is 0 V, logic "1" means the output is 5 V. This makes it possible
to drive directly: an opto-coupler, a TTL gate or a CMOS gate.
•
The Limit Status or LIM-status is "1" in case the output voltage or
current reaches the limit setting. Which limit circuit is active can
be seen on the front panel indicators.
•
The Over Temperature Status or OT status is "1" in case of an
over temperature, the display will show the OT symbol and the
output shuts down.
•
The Current Control Status or CC-status output is "1" when the
unit is in CC-mode.
•
The Power Sink OverLoad Status or PSOL-status output is "1"
when the optional Power Sink is overloaded or overheated.
•
The AC-Fail Status or ACF-status output is "1" in case the input
voltage is too low or too high.
•
The DC-Fail Status or DCF-status output is "1" when the output
voltage is either 5% below or above the set point.
•
The table on page 1 - 2 of the interface datasheet shows the im-
pedance levels of the status outputs.
•
See figure 7 - 7 for a connection diagram.
10
REMOTE SHUTDOWN
•
A voltage of +4 V...+12 V on the Remote ShutDown input on the
programming connector will switch off the output of the unit.
•
If the input is high, the RSD icon is shown in the display, see fig 7 -
8.
•
It is also possible to use a relay contact or a switch to shut the unit
down (see fig. 7 - 9).
•
In standby mode the power supply consumes very little power.
•
Note: also via Eth or other interfaces RSD can be activated.
11
REFERENCE VOLTAGE
•
A 5.114V reference voltage is available on the connector. This
reference can be used to control the unit with external
potentiometers.
12
AUX12V
•
The 12V on the programming connector can be used to supply
external circuits. The output current is fuse protected at 0.2A and
should not be overloaded.
•
Output impedance is 5 Ohms.
13
TROUBLE SHOOTING
PROGRAMMING DOES NOT WORK OK
•
Check the interface is in slot2, 3 or 4, not in slot1.
•
Check the programming source is the correct slot.
•
Check that there is only 1 analog interface installed.
•
Check the output is switched ON, the Interlock is connected and
Remote ShutDown is low.
STATUS OUTPUT FAIL
•
Check the interface is in slot2, 3 or 4, not in slot1.
•
Check the wiring of the analog programming connector for short
circuit or loose contacts.
•
If the front display shows a status icon, but the logic output on the
interface remains low, send the unit back for repair.
14
CALIBRATION
•
The isolated analog interface is factory calibrated.
•
If desired, both the 5 V and 10 V range can be custom calibrated.
See the ethernet programming manual for more details.
fig. 7 - 9
Remote ShutDown using a relay contact
Menu
Lock
on/OFF
0.0V
0.00A
none 0.0V
none 0.00A
int
fig. 7 -8
Position of the interface icon in the unit display.
