Simplex 4100ES Installation & Maintenance page 90

Using T-GEN 50 with 4100ES,
To make this work, NAC1 must be programmed as AUXPWR to make it turn on
continuously without supervision. The NAC output capacity is 2A overall.
In the current AS 4428 configuration template, NAC1 is normally assigned to the
Ancillary Control Facility (ACF). If NAC1 is used for an ancillary supply, and an ACF
output is required, the AUX RELAY contacts on the SPS can be used. These provide a
single clean set of changeover contacts, with no supervision or power. To make this
work, the 4100ES configuration must be amended to control the Auxiliary Relay from
ACF.
The T-GEN 50 should not be powered from a NAC output. T-GEN 50 draws a large in-
rush current when it is first turned on, which produces an "SPS Over Current" fault in the
system that can only be cleared by pressing the 4100ES System Reset button. This is not
acceptable operation.
Continued
SHLD
B+
IDnet
To
T-GEN 50
-
Figure 6-4. Taking Ancillary Power from NAC1
6-9
A-
B+ B-A+ A- B+ B-A+ A-
A+
NAC1 NAC2
4100U SPS
(4100-9848AU)
- - - - - - -
F4 F3 F2 F1
B+ B-A+ A-
NAC3