LEESON Micro Series Dynamic Braking Kit - Manual

MICRO SERIES DYNAMIC BRAKING OPTION
INSTALLATION INSTRUCTIONS (Manual Number: MDB-6-A)
1.0 INSTRUCTIONS FOR KITS: 174184.00, 174185.00, and 174193.00
1.1 PARTS LIST
(1) Dynamic Braking Board (9935-XXX or 9956-XXX) (1) Resistor assembly (if ordered)
(1) 7/16” Nylon sleeve standoff (1) 3/4” Nylon sleeve standoff
(2) Nylon “snap-in” standoff (7.5 HP kits only) (1) Nylon shoulder washer
WARNING!
Hazard of electric shock! Remove power from the drive and wait three minutes before attempting this procedure. DC Bus capacitors retain charge after power is removed.
The internal components of the Micro Series can be damaged by electrostatic discharge (ESD)! Use an antistatic wrist strap with the ground clip attached to the drive
ground lug when attempting this procedure. Always place components on antistatic surfaces or in antistatic bags when they are not being handled during this procedure.
1.2 PROCEDURE
NOTE: Refer to 1.4 Exploded View while performing this procedure. Be careful when removing and installing boards, as there are many pins that can be easily bent.
1. With drive cover removed, remove the keypad assembly. On NEMA 1 units, this is done by prying one end of the bracket up and out. On NEMA 4 or 12 units,
remove the screws that hold the bracket in place. Then unplug the keypad ribbon cable from the Main Control Board (9933A-XXX or 9019-XXX).
2. Remove the Main Control Board by removing the four screws (one at each corner), and carefully lifting the board straight up and out.
Remove the 1-5/16” nylon sleeve standoff from the lower left-hand corner screw, and replace it with the 3/4” nylon sleeve standoff from the kit.
There is a 2 x 6 pin connector that connects the P3 plug on the Main Control Board to the P3 plug on the Power Board below. Leave this plugged into the P3 plug
on the Power Board.
3. Under the Main Control Board is the Driver Board (9926-XXX) which must be removed to install the DB Board. Remove the Driver Board by pinching the flared
top of each nylon standoff while gently lifting up on the board (leave the standoffs snapped into the Power Board underneath).
NOTE: On 7.5 Hp, 480 Vac and 590 Vac drives only, remove and save the 2 x 6 pin connector that is plugged into PL2 on the Driver Board (another 2 x 6 connector
may be included in the DB kit; only one is needed).
4. Slide the nylon shoulder washer through the 3/16” hole near the lower left-hand side of the DB Board, and slide the 7/16” nylon sleeve standoff onto the shoulder
washer from the bottom side of the board.
NOTE: On 9956-XXX boards (kit 174193.00), install the two nylon “snap-in” standoffs into the holes at the bottom near the DB1 and DB2 terminals.
5. Snap the DB Board into place where the old Driver Board was, onto the same nylon standoffs that held the Driver Board in place. Make sure that the PL1 pin
connector and the P8 and P9 spade connectors make positive contact with their respective plugs.
NOTE 1: The 9956-XXX board (kit 174193.00) also has a P11 connector on the bottom of the board. Make sure that the P11 connector makes positive contact
to the pins on the Power Board below.
NOTE 2: On 9956-XXX boards (kit 174193.00), install the 2 x 6 pin connector in PL2.
6. Re-install the Main Control Board. Make sure that the PL2 and P3 pin connectors make positive contact through the bottom of the Main Control Board.
7. Re-install the keypad assembly and drive cover.
1.3 WIRING AND PROGRAMMING
Refer to the appropriate diagram to the right for wiring.
The Dynamic Braking board for 7.5 Hp, 480 Vac and
590 Vac drives (kit 174193.00) also contains the
Additional Form C Relay option.
To enable Dynamic Braking, set DYN BRAKE
(parameter 14) to ON.
To enable the Additional Form C Relay, set TB-14 OUT
(parameter 52) to the desired status indication.
Refer to the drive's Installation and Operation Manual
for more info on programming.
0.5 - 5 HP @ 240 Vac and
1 - 7.5 HP @ 480 & 590 Vac
YELLOW WIRE
To TB-14 on Main
Control Board
RED
WIRE BLUE
WIRE
From Resistor Assembly
DB & Form C Relay Board
(kit 174192.00)
DB1 DB2
19 20 21
DB1 DB2
RED
WIRE BLUE
WIRE
From Resistor Assembly
Dynamic Braking Board
(kits 174184.00, 174185.00)
1.5 RESISTOR CONFIGURATIONS
When the Dynamic Braking Kit is ordered separately from the Micro Series drive, the resistor assembly will be shipped in the 480 Vac and 590 Vac configuration. For 240
Vac units, the resistor configuration must be modified, as shown below, using the hardware included with the kit.
NOTE: If the Dynamic Braking option is ordered with the drive, the resistor assembly will be shipped in the proper configuration, and no modification is required.
SCREW (TYPICAL 4 PLCS.)
SHOULDER WASHER
(TYPICAL 4 PLCS.)
1 5/16" STANDOFF
(TYPICAL 3 PLCS.)
LOCATION OF P8 & P9 ON 7.5
HP DB BOARD (9956-XXX)
2 X 6 PIN CONNECTOR
3/4" STANDOFF
SHOULDER WASHER
STANDOFFS ONLY
PRESENT IN 7.5 HP KIT
(9956-XXX DB BOARD)
7/16" STANDOFF
Add jumper wire between Tab #1 and Tab #3, and move the RED wire to Tab #2.
1 2 3 1 2 3
JUMPER
WIRE
RED BLUE RED BLUE
480 Vac & 590 Vac 240 Vac
1.4 EXPLODED VIEW
Applies to kits: 174184.00, 174185.00, and 174193.00
0.5 - 5 HP @ 240 Vac and
1 - 7.5 HP @ 480 & 590 Vac