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8. Verify all connections as summarized in Table 2-5.
9. To add a third MPS or a fourth MPS in parallel, make the RI/FLT,
OVP, CMP and output connections in parallel with the connections of
MPS 1 and MPS 2. For MPS 3, set the CAL AND ID switches on the
rear panel as follows : switches 5 through 8 are OFF, switches 4, 3, 2
and 1 are ON, OFF, ON, ON respectively. For MPS 4, set the rear
panel CAL AND ID switches as follows : switches 5 through 8 are
OFF, switches 4, 3, 2 and 1 are ON, ON, OFF, OFF respectively.
Configure the CMP switches for MPS 3 and MPS 4 as those in MPS 1
and MPS 2.
NOTE: For proper operation, turn on MPS 1 and then the remaining
MPS units within 15 seconds.
2-8
Lake Shore Model 647 Magnet Power Supply User's Manual
Figure 2-5 Typical Multiple MPS Connections For Two MPS Units
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
MPS 1
Control Bus
Control Bus
8 (OVP)
8 (OVP)
1 (+RI), 3 (+FLT)
1 (+RI), 3 (+FLT)
2 (–RI), 4 (–FLT)
2 (–RI), 4 (–FLT)
+OUT
+OUT
–OUT
–OUT
Table 2-5 Two-MPS Autoparallel
Configuration Connections
Setup & Connections
MPS 2
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