Pendant Cord
operation.
3.5.6 CAUTION All dual speed hoists are equiped with a VFD. The VFD is used to control the high and low lifting speeds. The speeds come preset from the factory (See Table 3-6, ER2OM). Speed (frequency) can be customized. Refer to Section 3.6.10 of ER2OM, for hoist specific speed ranges and instructions.
Do NOT remove power to the dual speed (VFD control) hoist or trolley during
3.5.5 DANGER
3.5.2 CAUTION Do NOT apply electronic soft-start control or voltage varying controls to the ER2 or NER2 hoist. Use of such devices may cause the motor brake and other electrical components to malfunction. Variable frequency drives MAY be used with the single speed ER2/NER2 hoists, contact Harrington Hoists, Inc. for more information.
3.5.3 DANGER Before proceeding, ensure that the electrical supply for the hoist or trolley has been de-energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1 “Personnel Protection -Lockout/Tagout of Energy Sources”.
3.5.4 DANGER To avoid a shock hazard, DO NOT perform ANY mechanical or electrical maintenance on the dual speed ( VFD control) trolley or hoist within 5 minutes of de-energizing (disconnecting) the trolley or hoist. This time allows the internal VFD capacitor to safely discharge.
Ensure that the voltage of the electric power supply is proper for the hoist or trolley.
3.5.1 CAUTION
3.4.5 WARNING

3.4.4Lug Mounted ER2080S and ER2100L-LG – To maintain proper balance when the hoist is not loaded, it is necessary to install a stabilizing shaft to prevent the hoist from pivoting on the main support shaft. Refer to Figure 2-1and Figure 2-2for the size and location of the main support and stablizing holes in the hoist’s top suspension plates.

Ensure that the fixed suspension point rests on the center of the hook’s saddle and that the hook’s latch is engaged.

3.5Electrical Connections

3.5.7The following instructions apply when the hoist is hook mounted to a fixed suspension point or installed on a manual trolley. The hoist is controlled by a pendant with two push buttons – one for lifting and one for lowering. Refer to the appropriate trolley Owner’s Manual if the hoist is installed on a motorized trolley. Special wiring considerations must be taken if the trolley is used with a trolley other than an MR2 model.

The Pendant Cord connects to the hoist via an 8-pin (8P) Plug and Socket. Make this connection as follows:

ƒRefer to Figure 3-5 or 3-6depending on the Product Code.

ƒFor ER2080S and ER2100L - Insert the 8P Plug into the 8P Socket on the hoist body and hand tighten the Lock Ring. Install the strain relief cable to the bottom of the hoist body.

ƒFor ER2100S, ER2150S and ER2200S - Insert the 8P Plug into the 8P Socket on the switch box and hand tighten the Lock Ring. Install the strain relief cable onto the cord strain relief stopper located at the 8P socket.

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