Electronics Power Supply, Main Contactor, And Fans 1180 To 1680 Amps; Remote Relay Enable Terminals: 430 Amp To 1680 Amp Base Drive Panels - Siemens 6RA70 Series Instructions Manual

Electronics power supply, main contactor, and fans 1180 to 1680 amps

Function
Incoming AC supply
460 VAC, 3 Phase
Current Requirement for Terminals if supplied from a separate source
1180, 1660 and 1680 amp base drives:
Note: Phase sequence is important for the fan direction of rotation. The fan must rotate counter-
clockwise when viewed from above. If necessary, swap the L1 and L2 phase wiring at
incoming supply to change the fan direction of rotation.

Remote relay Enable terminals: 430 amp to 1680 amp base drive panels

Function
External enable (if used)
The 430 amp to 1680 amp Base Drive Panels use a DC contactor that is interlocked through the enable function
at regulator terminals 34 and 38. This circuit is brought out to CBT terminals 93 and 94 to allow an easy point to
add an external enable contact if required. A remote enable contact can be wired directly to terminals 34 and 38
of the regulator for Base Drive Panels rated 15 to 255 amps.
Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Terminal Connection values/Remarks
97 Internally connected to incoming
CTB
CTB 99 460V supply
CTB 101
2.5 amps at 460 VAC 3 phase
Terminal Connection values/Remarks
CTB 93 If a remote enable function is required
using a relay contact, then remove jumper
CTB 94
J5 and install a normally open low voltage
contact at terminals 93 – 94.
Possible
settings
Possible
settings
7-23