Kamstrup MULTICAL 401 - Page 48

TECHNICAL DESCRIPTION MULTICAL
®
401
5512-091 GB/02.2008/Rev. J1
48
The module can also transmit energy pulses to CTS-systems or similar remote accumulation. As energy pulses are
not transmitted ”real-time”, they cannot be used for regulation purposes.
The pulse output is convenient for connecting electronic counter inputs, while electro-mechanical counters
normally require a higher current than 10 mA which the module allows.
Every time the energy display is updated, one pulse on the CE output is transmitted. Example: CCC=119 causes 1
kWh/pulse. The pulses are transmitted immediately after each display updating, in connection with which the
number of energy pulses transmitted corresponds to the consumption in the preceding 28 sec. (or 4 sec. when
the meters is configured to ”fast mode”). If the consumption is larger than 1 display resolution for each 28 sec.,
the pulses are transmitted with a 2 sec. interval.
Example: MULTICAL

401 qp 3.0 with CCC=136. Current flow = 3000 l/h and the differential temperature 75 K,
which corresponds to a current power of 257 kW.
In normal mode the power of 257 kW will be transmitted as 2 pulses for each 28 sec.
Normal mode
Energy pulse (CE)
02 28 30
Display update
0 28
sec.
In fast mode the power of 257 kW will be transmitted with 16 and 12 sec. intervals alternating.
Fast mode
Energy pulse (CE)
01628
Display update
0 4 8 12 16 20 24 28 4
sec.
Voltage:  30 V
Uce (ON): Typically 1 V @ 10 mA
Load:
 10 mA
Pulse duration: Programmable via the >FF< code:
Output A
(CE) Terminal 16-17
FF
Pulse duration
00 OFF
94
1 msec.
95
30 msec.
96
0.1 sec.
Table 18