Specifications

Chapter 4 - Installation for MV-8 and MV-19 Controllers
48 Adept MV Controller User’s Guide, Rev C
System Grounding Information
The detachable three-wire power cord is used for connection to both the power source and
protective ground. The protective ground conductor (colored green/yellow) in the power
cord is internally connected to the exposed metal parts of the MV Controller. To ensure
electrical-shock protection, the protective ground conductor must be connected to a
properly grounded power source.
WARNING:
Ensure that a proper protective ground connection exists
before turning on the power.
Changing Voltage Settings (MV-8 and MV-19)
To change the AC voltage setting from 200-240V to 100-120V, you must change three
jumper wires on the configuration block and change three fuses. You should make this
change before installing the controller, because you must open the top of the controller to
get to the configuration block.
WARNING:
Only skilled or instructed personnel should attempt to
change the AC voltage settings. This requires access to the interior of the
controller and potentially dangerous AC voltage may be present if the
power cord is not disconnected.
1. Make sure the controller is turned off. Disconnect the AC power cord from the AC
power source, or from the front of the controller.
2. Remove the top cover of the controller by unscrewing four screws on the top.
3. Open and fold down the back section of the controller by removing the upper two
screws on each side of the back edge of the chassis (see Figure 4-2). When the
screws are removed you can fold the back section down to make it easier to access
the configuration block, which is located inside the back of the controller near the
top.
4. Change the jumper wires on the configuration block from the 200-240V to the
100-120V settings; see Table 4-4.
5. Change the two internal fuses F1 and F2 from the 200-240V to the 100-120V value;
see fuse information in Table 4-5 and on the label near the fuses – see Figure 4-3.
6. Close and secure the back panel and install the top cover.
Table 4-4. Voltage Selection Jumper Settings
Operating
Voltage
Jumper these pins together on the
Configuration Block.
200-240VAC 24 to 16 32 to 40 5 to 2
100-120 VAC 24 to 8 32 to 16 5 to 9
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