Emerson MPR15 Series User Manual

56   Installation and start-up procedures 

UM5C06B / C ( 169-2071-500 )   P0711722   Standard 10.00   May 2001 

1 EQL 1 

EQL 

2 RG+ 2 

HVSDR 

3 RC- 3 

HVSD 

4 N/C 4 

RFA1 

5 HVSDR 5 

LOGIC 

RETURN 

6 HVSD 6 

RFA2 

7 RFA 7 

N/C 

8 N/C 8 

LVA 

Order cable assembly P0739814 to connect the alarm signals (J3) to the 

alarm monitoring unit. 

The NT5C10BM power shelf (23 inch mounting) is wired to accept the 

NT5C10KB local equalize feature. It can house up to three MPR15 or 

MPR25 rectifiers and is wired for common AC input, 120 / 208 / 240 V AC. 

When the equalize switch is set to the EQL position, a battery return signal is 

sent to the remote equalize input port of each rectifier in the power shelf. 

The rectifier output voltage will increase by the amount set with the EQL 

adjustment potentiometer of the rectifier. Each rectifier must be individually 

adjusted to the same equalize voltage level. The yellow LED indicates that 

the rectifiers are in equalize mode. 

This option is offered with the embedded power shelves to provide local 

equalize. The power shelf must be pre-wired in order to install this feature. 

The NT5C10KA is brown and the NT5C10KB is oxford grey. 

It is recommended that the rectifiers be inserted in the 

shelf from right to left, starting with position 1. When a 

Low Voltage Disconnect unit is available, the LVD must 

be mounted to the right of position 1.