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Electrical Installation 2 - 16
Remote Mount Resistor Unit Installation Using Internal Braking Transistor
(for P7U20P4 thru P7U2018 and P7U40P4 thru P7U4018)
Since the Remote Mount Resistor Unit generates heat during dynamic braking operation, install it in a location away from
other equipment.
1. Install the Remote Mount Resistor Unit to a non-combustible surface, maintaining a minimum 1.97 inches (50mm)
clearance on each side and a minimum 7.87 inches (200mm) clearance on top.
2. Remove the Remote Mount Resistor Unit cover to access its terminal block. Connect the Remote Mount Resistor Unit to the
Drive and to external control circuitry according to Fig 2.6 below.
Fig 2.6 Wiring Remote Mount Resistor Unit (for P7U20P4 thru P7U2018 and P7U40P4 thru P7U4018)
3. Reinstall and secure Remote Mount Resistor Unit cover and Drive front cover.
4. Proceed to “Adjustments” section on page 2-20.
Table 2.8 Wire Size for Remote Mount Resistor Unit
Terminals B, P, R1, R2 1, 2*
Wire Size (AWG) 12-10 18-14*
Wire Type 600V Ethylene propylene rubber insulated, or equivalent
Terminal Screw M4
* Power Leads for the Remote Mount Resistor Unit generate high levels of electrical noise - these signal leads must be grouped separately.
IM
S3 SN
(R2)*
(R1)*
3% DUTY CYCLE
RESISTOR ASSEMBLY
*
Terminal markings in parentheses
are for resistors manufactured by
Powerohm Resistors Inc.
120 VAC