Yaskawa Z1000U HVAC Matrix Bypass - Manual (Page 79)

<1> Connect the cabinet ground lug to earth ground and utility ground.
<2> Insulated twisted shielded wire is required. Connect the shield only at one end to avoid ground loops. Do not run these
wires in the same conduit as AC power or AC control wires.
<3> Secondary fuse F6 is added with control transformer T1 or a power rating 350 VA or greater.
<4> Set E1-05 to 208 for 208 Vac applications.
<5> The motor overload relay is factory set for manual reset. Adjust the motor overload relay trip setting for the actual AC
motor full load amps.
<6> Bypasses with option PW should set Z1-42 to 1, and Z2-07 to 36 and Z2-15 to 1 to trigger an “EFb” fault with the motor
coasting to stop when the soft starter faults.
<7> R1 is a fail-safe contact. It is shown de-energized.
<8> Set DIP switch S1 to the ON position to enable the termination resistor only in the last drive in a MEMOBUS/Modbus
network.
<9> The maximum output current capacity for the +V terminal on the control circuit is 20 mA. Never short terminals +V and
AC, as it can cause erroneous operation or damage the drive.
<10> Use jumper S5 to select between voltage or current output signals at terminals FM and AM. Set parameters H4-07 and
H4-08 accordingly.
3.2 Standard Connection Diagram
YASKAWA SIEP YAIZ1D 01A Z1000U HVAC MATRIX Drive Bypass Technical Manual 79
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Electrical Installation