Uson 628 - Isolated Power Supply; Result & Ready Outputs

3-8 Uson 628 Operator’s Manual
Table 3–4: I/O Port Descriptions
3.2.8 Isolated Power Supply
The interface is powered by an internal isolated 24V DC to DC converter and is
rated at 5 Watts continuous use, or 8 Watts for a 50% duty cycle. This supply can
be used to power an external device like a lamp or a relay.
3.2.9 Result & Ready Outputs
The Pass, Reject Max, Reject Min, and Ready outputs are provided as 24V DC
outputs to drive the lamps of the remote unit. The outputs mimic the operation of
the Tester’s front panel indicators. Figure 3–4 shows the circuit for the Remote
Unit. The Ready Output indicates when the tester is ready to perform a test cycle.
The maximum contact rating is 24V at 50mA per output and a minimum current of
1mA.
Figure 3–4: Remote Unit Circuit
Pin I/O Function Pin I/O Function Pin I/O Function
1
OV ISO Return
9
OV ISO Return
17
Reset Input
2
+ Reject
10
Prog E Input
18
Prog F Input
3
- Reject
11
Prog A Input
20
Ready
4
Pass Output
13
24v Isolated Supply
21
0V Isolated Return
6
Prog D Input
14
OV ISO Return
22
End Of Cycle
7
Prog C Input
15
Switch Enable
23
End Of Cycle
8
Prog B Input
16
Start Input
24
Alarm
25
Alarm
Notes:
All diodes for protection.
(Iso) = Isolated voltage
source from main PSU.