VMX
2
Series Digital Solid State Soft Starter User Manual
21 |
P a g e
4.2.7 Fault Signal
An optically isolated Triac output is dedicated as a fault indicator on
TB1, terminals 11 and 12, labeled “
Opto
”. The output Triac switch is
rated for 10 - 250VAC,
50 mA (maximum)
. If the three programmable
Output Auxiliary Relays are being used for other functions, this output
can easily be hooked up to a PLC or small external relay to provide a
Fault signal. This Fault Output operation is permanently fixed at “Any
Trip”, duplicating the relay setting 22 as shown in Table 5.6.9.
This output is permanently set to this function and is not
programmable.
4.2.8 Output (Auxiliary) Relay Contacts
Three programmable auxiliary relays are on TB2. The
VMX2 Series
starter comes with three programmable dry relay output contacts.
Outputs 1 and 2 are Form C (SPDT), with a Common, N.O. and N.C.
Output 3 is a Form A, (SPST), N.O. contact. It is not necessary to use
the programmable output auxiliary relays in the Start / Stop circuit. An
internal seal-in relay is provided elsewhere (see 4.2.2.a). Motortronics
recommends fusing all outputs with external fuses.
The relays are rated for 240VAC, 5 A and 1200 VA.
Factory default settings for these relays are as follows:
▪
AUX 1
- Run / Stop (see
F060
).This contact changes state upon a
Start command, returns to normal on Stop (or Begin Decel if active).
▪
AUX 2
- At-Speed / Stop (see
F061
).This contact changes state
upon the
VMX2 Series
detecting At-Speed, and returns to normal
on Stop. At-Speed is determined by the
VMX2 Series
detecting the
current dropping after reaching End-of-Ramp, or a maximum of 30
seconds after Start.
▪
AUX 3
- Any Trip (see
F062
) This contact closes when any trip
condition 5 - 21 (as defined in Table 5.6.9) occurs.
All relays can be reprogrammed for a wide variety of functions.
See Section 5.6.9 for additional relay programming details.
K3
Internal Connections
Figure 4.2.8
Auxiliary Relay Connections
TB-2
AUX.
RELAY #1
AUX.
RELAY #3
AUX.
RELAY #2
13 14 15 16 17 18 19 20
1
NC NO
.
C
1
A1 A2
2
NC NO
.
C
3
NO
.
C
K5
K4
