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90
Unidrive SPM User Guide
www.controltechniques.com Issue Number: 3
6.14.4 SPMC/U (rectifier) LEDs
The control circuitry of the Unidrive SPMC/U monitors the drive status
and generates codes via the status output LEDs (S1 and S0).
Figure 6-38 Status LED location
The STATUS LEDs S0 and S1 mirror the status outputs and are
encoded as follows:
Table 6-24 Key to SPMC (rectifier) LEDs
The SPMD drive will monitor the status lines and on detection of a fault
disables the system via a PhP or (when used in conjunction with a
SPMC) OHT4.P trip.
Table 6-25 Key to SPMU (rectifier) LEDs
6.15 Low voltage DC mode enable,
heatsink fan supply connections
(SPMA/D) and status input
connections (SPMD)
Unidrive SPMA and SPMD require a low voltage DC mode enable signal
to terminal 50 and 51 of the lower terminal connector near the W phase
output, to allow the drive to be used from a low voltage DC supply.
For more information regarding low voltage DC operation, see the
Low
Voltage DC Mode Application Note
.
Figure 6-39 Location of the SPMA/D low voltage DC mode enable
connections
Figure 6-40 SPMA low voltage DC mode enable connections
85
Ex24V supply
Function
The rectifier must be supplied with
+24V to power the fans and control
PCB
Nominal voltage
+24Vdc
Minimum continuous operating
voltage
+23V
Maximum continuous operating
voltage
+28V
Current consumption
3.0A
Minimum start-up voltage
+18V
Recommended power supply
24V, 100W, 4.5A
Recommended fuse
4A fast blow (I
2
t <20A
2
s)
90
91
Relay contacts
Function
Rectifier OK indicator
Contact rating
0.4A AC 240V
4A DC 40V resistive load
0.5A DC 30V inductive load (L/R = 40ms)
Contact minimum recommended
rating
12Vdc 100mA
Relay state when rectifier is
operating normally
Closed
Update period
Relay is not latched, relay could change
state at a rate up to 30ms
Status Output
Meaning
1: Left LED 0: Right LED
OFF
OFF
Line power supply, or 24V supply to the
rectifier has been lost
OFF
ON
Phase loss
ON
OFF
Any of the following:
•
Snubber overheating due to excessive
cable charging current or supply notching
•
Rectifier heatsink over temperature
•
Rectifier PCB over temperature
•
Status input wire break
ON
ON
System OK
Status 1 (S1)
Status 0 (S0)
Status Output
Meaning
1: Left LED 0: Right LED
OFF
OFF
Line power supply loss, or 24V supply to
the rectifier has been lost
OFF
ON
•
Internal fault
Check that rectifier is an SPMU. This
could indicate that unit is an SPMC
ON
OFF
Any of the following:
•
Rectifier heatsink over temperature
•
Rectifier PCB over temperature
•
Status input wire break
ON
ON
System OK
55
54
53
52
51
50
65
64
63
62
61
60
0V
Low voltage DC mode enable
Not connected
0V
24V heatsink fan supply
Upper terminal connector
Lower terminal connector
To the heatsink fan
Pre-wired internally